Drilldown: Patents
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Choose a table:
- Airplane (18)
- Airship (15)
- Companies (475)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17525)
- Person (2105)
- Publications (24555)
- Techtypes (2370)
Patents > Office :
GB or
US
& National tech categories:
USPC 244/89
& CPCs :
CPC B64C13/00 or
CPC B64C3/00
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.