The U.S. Patent and Trademark Office in Crystal City has recently acquired a "Video Patsearch," a new type of computer especially designed for patent search work.

The computer is a gift from Intellectual Property Owners Inc. and is manufactured by the Pergamon International Information Corp. in McLean.

The computer shows the first page of drawings and the first page of the specifications of 750,000 U.S. patents granted since 1971. This information is retrieved from the computer by entering certain keywords, such as the patent classification or the title of the patent.

Computer operators will be provided for patent searchers. The cost of using the computer is $1 a minute.

While this new computer will unquestionably speed up patent searching in many cases, it does have certain disadvantages. Unfortunately, it will not show foreign patents or any patent issued prior to 1971. In addition, it will show only the first page of drawings and none of the claims on a patent.

Recent U.S. patents granted to residents of the District of Columbia, Maryland and Virginia:

District of Columbia

Herbert H. Wright. Telescopic Launch and Retrieval Chute, U.S. Patent No. 4,304,189. One claim.

Howard S. Jones Jr. of Washington, D.C., and Daniel H. Schaubert of Silver Spring. Multifrequency Series-Fed Edge Slot Antenna, U.S. Patent No. 4,305,078. Seven claims.

Maryland

Robert H. Burns of Arnold. Method of Suppressing Radiation from Ship Stack Gases, U.S. Patent No. 4,303,035. Six claims.

Milton J. Cohen of Potomac. Hypodermic Syringe with Needle Guide, U.S. Patent No. 4,303,069. Five claims.

Robert P. Burruss Jr. of Cabin John. Device for Evaporation and Inhalation of Volatile Compounds and Medications. U.S. Patent No. 4,303,083. One claim.

Herbert M. Cullis of Silver Spring. Method and Apparatus for Making a Rapid Measurement of the Hematocrit of Blood, U.S. Patent No. 4,303,336. 22 claims.

Michael V. Ernest of Baltimore and William A. Welsh of Clarksville. Diesel Exhaust Catalyst, U.S. Patent No. 4,303,552. 24 claims.

Arthur Ticker of Bowie, et. al. Apparatus and Method for Molding of Submerged Surfaces, U.S. Patent No. 4,303,608. 12 claims.

Robert B. DeWolf of Glen Burnie and Rimantas Glemza of Baltimore. Hydrous Silica Gel-Containing Dentifrice, U.S. Patent No. 4,303,640. Seven claims.

Laban E. Lesster of Crofton and Everett W. Opdahl of Lutherville. Inductive Coupler, U.S. Patent No. 4,303,902. 10 claims.

James M. Fawcett of Ellicott City and William F. Parrish of Baltimore. Image Motion Compensation for a TV Sensor System, U.S. Patent No. 4,303,945. Three claims.

Robert J. Membrino of Silver Spring and George D. Gilbreath Jr. of Alexandria. Digital Data Sorter External to a Computer, U.S. Patent No. 4,303,989. Seven claims.

Michael P. Beere of Timonium. Paper Roll Holder, U.S. Patent No. 4,304,367. 10 claims.

Frederick E. Wang of Silver Spring and William J. Buehler of Sarasota, Fla. TiNi Base Alloy Shape Memory Enhancement Through Thermal and Mechanical Processing, U.S. Patent No. 4,304,613. 24 claims.

Robert F. Farmer III of Rockville and Jacob J. Guth of Upper Black Eddy, Pa. Aqueous Hair Shampoo Compositions comprising Sulfated Ethylene Oxide-Propylene Oxide Condensates, U.S. Patent No. 4,304,691. Five claims.

Peter Bauer of Germantown. Method for Production Assembly of Fluidic Devices, U.S. Patent No. 4,304,749. 13 claims.

Gershon Meckler of Bethesda. Solar Energy Collector, U.S. Patent No. 4,304,955. Four claims.

Robert G. Curry Jr. of Severna Park and Edward L. Wallace of Ellicott City. Radar Video Compression System, U.S. Patent No. 4,305,073. Two claims.

Robert L. Richmond of Frederick and Paul F. Wyar of Mount Airy. On-Line Channel Quality Monitor for a Communication Channel, U.S. Patent No. 4,305,150. 20 claims.

Virginia

Vincent G. Gray of Falls Church. Safety Control System for Container Operations, U.S. Patent No. 4,303,169. 14 claims.

Charles Petrosky of Arlington. Hoop Apparatus, U.S. Patent No. 4,304,067. Six claims.

Joseph T. Hammrick of Roanoke and Leslie C. Rose of Rocky Mount. Heat Pump Operated by Wind or Other Power Means, U.S. Patent No. 4,304,103. Two claims.

William C. Feamster III of Chesapeake. Positioning Device for Scanner, U.S. Patent No. 4,304,133. Seven claims.

I. Bruce Stark of Staunton. System of Wood Combustion Employing Forced Draft, U.S. Patent No. 4,304,214. Four claims.

Reid A. Hull of Hampton. Moving Body Velocity Arresting Line, U.S. Patent No. 4,304,320. Nine claims.

Samuel Whitt of Fisherville. Bearing Pad for Supporting a Brace for a Highway Fence, U.S. Patent No. 4,304,395. Six claims.

James S. Shreve of Fairfax. Automated Exposure-Contrast Control Index Meter, U.S. Patent No. 4,304,473. 15 claims.

Mark E. Whitten of Alexandria. Hand-Held Retina Photographing Apparatus, U.S. Patent No. 4,304,483. 13 claims.

Larry A. French of Newport News. Method for Remotely Marking a Defective Heat-Exchanger Tube, U.S. Patent No. 4,304,800. Nine claims.