These firms recently filed with the U.S. Bankruptcy Court's local clerk of court offices.

Under Chapter 11 of the federal bankruptcy code, a company is protected from claims by creditors while it attempts to reorganize its finances under a plan approved by the court.

In a Chapter 7 liquidation, a court trustee sells assets to pay creditors' claims. The company then ceases operations.

Eastern Virginia District

Alexandria Division

Open Box USA Partners LLC

22900 Shaw Rd., Suite 134, Sterling, Va. 20166

Type of filing: Chapter 7 liquidation

Case number: 04-12237-RGM

Date filed: May 20

Attorney: Thomas P. Gorman, 703-549-5000

Assets: Zero to $50,000

Liabilities: $100,001 to $500,000

Largest unsecured creditor: Not disclosed

Maryland District

Greenbelt Court

Ladorn Systems Corp.

5001-D Forbes Blvd., Lanham, Md. 20706

Type of filing: Chapter 11 reorganization

Case number: 04-22410

Date filed: May 20

Attorney: Howard M. Heneson, 410-494-8388

Assets: $240,003

Liabilities: $452,464

Largest unsecured creditor: PS Business Parks, $41,206

Tri State Roofing and Siding Inc.

950 Commonwealth Ave., Hagerstown, Md. 21740

Type of filing: Chapter 11 reorganization

Case number: 04-23010

Date filed: May 27

Attorney: John D. Burns, 301-441-8780

Assets: Zero to $50,000

Liabilities: $1,000,001 to $10 million

Largest unsecured creditor: Internal Revenue Service, $376,673

-- Compiled by Judith Mbuya