Local inventor Eugene Williams Sr. has obtained a patent (No. 4,255,872) on an "audiovisual interview portfolio" that provides a different approach to the job-interview process.

The invention, which looks like an attache case, enables the job applicant to present his or her qualifications on audio and video cassette as well as on paper. It consists of a portfolio containing a notebook for writings held inside a large pocket; several looseleaf cards or holders for visual slides, and a pocket for audio and video cassettes.

Williams said he conceived the idea for his patent -- which received mention in the popular job-hunting manual "What Color Is Your Parachute?" -- while working in 1972 as a student-teacher supervisor at Howard University.

Williams also has been a senior research scientist at Laurence Johnson & Associates here and an administrator with the D.C. public schools and the Sojourner Douglass College in Baltimore. He presently is with Associates for Renewal in Education here.

Williams said he has submitted his invention for marketing consideration by American University, the Amway Corp. and Sears, Roebuck and Co.

The prototype for Williams' invention is expected to cost about $500. It will retail for about $60.

Recent patents granted to local residents: Maryland

Daniel M. Kennedy III and Patricia C. Kennedy, both of Rockville. Flexible Parking Space Barrier. Patent No. 4,356,666. 25 Claims.

William R. Lessig III of Cockeysville. Cutting Mechanism For a Grass Cutting Machine. Patent No. 4,356,686. Four Claims.

Deborah Winstead-Hall of Baltimore. Syringe Assembly. Patent No. 4,356,822. 12 Claims.

Laura A. Adams of Landover. Bicycle Cover with Lock Holes. Patent No. 4,356,831. Six Claims.

Theodor Kolobow of Rockville and Yoichiro Ito of Bethesda. Blood Cell Separator. Patent No. 4,356,958. 28 Claims.

Marvin S. Towsend of Oxon Hill. Combined Brush and Cutter Attachment for a Shovel Blade. Patent No. 4,357,043. 10 Claims.

Harry W. Brown of Annapolis. Shaft Coupling. Patent No. 4,357,137. Nine Claims.

Donald C. Erickson of Annapolis. Internally Heat-Pumped Single Pressure Distillative Separations. Patent No. 4,357,153. 14 Claims.

Vernon D. Ringbloom of West Friendship. Process for Coating Crystalline Explosives with Polyethylene Wax. Patent No. 4,357,185. Four Claims. Virginia

Gordon P. Tuggle of Portsmouth. Hydrofoil Boat. Patent No. 4,356,786. 30 Claims.

David B. Mortimer of Richmond. Acoustical Enclosure System. Patent No. 4,356,884. Seven Claims.

John L. Harmsen of Vienna. Railroad Tie Cover. Patent No. 4,356,968. 11 Claims.

Edward Van Bryant Jr. of Richmond. Convertible Recreational Device. Patent No. 4,357,020. One Claim.

Eldon D. Goodem of Chesterfield County of Henrico County. Conveying System. Patent No. 4,357,128. Eight Claims.

Bela Molnar of Alexandria. Annealing of Ion-Implanted Gas and INP Semiconductors. Patent No. 4,357,180. Eight Claims.

Roswell D. M. Peters of Rustburg. Hexagonal Quartz Resonator. Patent No. 4,357,554. 10 Claims.

Walter Koechner, of Great Falls. Disc or Slab Laser Apparatus Employing Compound Parabolic Concentrator. Patent No. 4,357,704.