Drilldown: Patents
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Choose a table:
- Airplane (18)
- Airship (15)
- Companies (480)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17611)
- Person (2131)
- Publications (24568)
- Techtypes (2379)
Patents > Year granted:
1890 - 1899
& Related to aircraft :
-1 or
0? or
1910562264 or
Partially
& Assigned to :
Sperry Gyroscope Company or
None
& National tech categories :
USPC 244/80 or
USPC 416/108
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.