U.S. Patent Office

Patent Office

S. View of the New Patent Office. Longitudinal Section of the Centre Building Completed. Plan of National Gallery of American Manufactures and Agriculture

Old Patent Office plan

Letter from Mary Shoemaker to her father, F. Shoemaker

Alexander Próvost

Old Patent Office plan

Patent Office

U.S. Patent Office

Patent Office

A View of the Patent Office Building

Bohn's Hand-Book of Washington

Patent-Office, Washington, D.C. - Examiners at Work

U.S. Patent Office

Model Room in U.S. Patent Office

United States Patent-Office Department, Washington, D.C.

Model Hall, Patent Office

Patent Office - Model Room

Views of Washington and Vicinity

Interior View of the West Hall, United States Patent Office Model Room, After the Fire of September 24th, 1877

North Front of Patent Office

New Wing, Patent Office

The Patent Office

North Front of Patent Office

Model Room, Patent Office, Washington, D.C.

New Wing, Patent Office

Pamplet on "How to Obtain a Patent"

Patent Office

Valentine depicting the U.S. Patent Office

Patent Office, Washington, D. C.

Patent Office, Washington, D. C.

U. S. Patent Office, Washington, D. C.

Patent Office

U. S. Patent Office, Washington, D. C.

U. S. Patent Office, Washington, D. C.

U.S. Patent Office, Washington, D.C.

U. S. Patent Office, Washington

Patent Office, Washington, D. C.

Downtown Urban Renewal Area Landmarks