Drilldown: Patents
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Choose a table:
- Airplane (18)
- Airship (15)
- Companies (481)
- Event (141)
- Letters (683)
- Organizations (969)
- Patents (17648)
- Person (2204)
- Publications (24577)
- Techtypes (2416)
Patents > Year granted:
1920 - 1929
& IPCs :
IPC B64C25/00 or
IPC B64C31/06
& Citations from after 1930:
None
Use the filters below to narrow your results.
CPC B64C25/60 (1) ·
CPC B64C25/00 (2) ·
CPC B64C25/06 (3) ·
CPC B64C25/34 (1) ·
CPC B64C25/36 (1) ·
CPC B64C25/62 (3) ·
CPC B64C25/64 (1) ·
CPC B64C3/56 (1) ·
CPC B64F2700/6226 (3) ·
IPC B64C25/34 (1) ·
IPC B64C25/52 (1) ·
IPC B64C25/54 (1) ·
IPC B64C25/62 (1) ·
IPC B64C25/66 (1) ·
IPC B64F2700/6226 (1)
Showing below up to 8 results in range #1 to #8.