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11 résultats pour : early 1900s patent

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FDA History - Patent Medicines & Liniments - A bottle of Barker's Liniment (late 1800s or early 1900s)
UMG22A39_343

FDA History - Patent Medicines & Liniments - A bot...

N.B. Subblefield
UMG22A21_109

N.B. Subblefield

United States Patent Office
UMG22A23_015

United States Patent Office

Patent Office exterior, [Washington, D.C.] ca. between 1910 and 1935
UMG22A10_448

Patent Office exterior, [Washington, D.C.] ca. be...

Stacks of documents in Patent Office, Washington, D.C. ca. 1909
UMG22A13_358

Stacks of documents in Patent Office, Washington, ...

Workers at the U.S. Patent Office, [Washington, D.C.] ca. between 1918 and 1928
UMG22A13_202

Workers at the U.S. Patent Office, [Washington, D....

Patent Drawing for A. F. Knight's Golf Club 1903.
UMG21A20_365

Patent Drawing for A. F. Knight's Golf Club 1903.

United States Patent office workers looking through collection of over 2,000,000 patents circa 1940 .
UMG21A22_025

United States Patent office workers looking throug...

Employees in the patent office file room circa 1940.
UMG21A22_024

Employees in the patent office file room circa 194...

Patent Office employee pointing to copies of first patent granted after 1836 when patent laws were rewritten circa 1940.
UMG21A22_023

Patent Office employee pointing to copies of first...

Artificial Christmas Tree 1911.
UMG21A20_356

Artificial Christmas Tree 1911.