Access
States
Counties
Language
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Aeroplane
Patent for an aeroplane that will maintain its balance in the air automatically
Date:
December 5, 1911
Creator:
McManus, Augustus F. W.
System:
The Portal to Texas History
Spring-Washer for Piano-Flanges.
Patent for a spring washer for piano flanges that prevents the flanges from becoming loose over time.
Date:
December 5, 1911
Creator:
Mayor, Enoch Allen
System:
The Portal to Texas History