Results for “patent”

Old Patent Office, model room - Washington, D.C.

Old Patent Office, model room - Washington, D.C.

Brady-Handy · 1674×1737

Stacks of documents in Patent Office, Washington, D.C. LCCN93510973

Stacks of documents in Patent Office, Washington, D.C. LCCN93510973

National Photo Company Collection · 4096×3276

Behringcenter, imsingerco, isaacsinger

Behringcenter, imsingerco, isaacsinger

takomabibelot · 1024×768

Item, national, archives

Item, national, archives

Department of the Interior. Patent Office. (1849 - 1925) · 3012×2432