Drilldown: Techtypes
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- Airplane (18)
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- Companies (474)
- Event (141)
- Letters (683)
- Organizations (964)
- Patents (17447)
- Person (2040)
- Publications (24414)
- Techtypes (2337)
Use the filters below to narrow your results.
airplane (1) ·
Canadian patent classifications (1) ·
Classifications of French patents, 1904-1958 (2) ·
CPC B63 (1) ·
CPC B63H (1) ·
CPC B63H5/00 (1) ·
CPC F42B (1) ·
Danish patent classifications (1) ·
FR 6 (1) ·
French patent classifications (2) ·
GB 4 (1) ·
hydroaeroplane (1) ·
Mexican patent classifications (2) ·
MX F (1) ·
simple tech terms (2) ·
Swiss patent classifications, 1908-1920 (1) ·
USPC (2) ·
USPC 114 (3) ·
USPC 114/271 (1) ·
USPC 2/69 (1) ·
USPC 440 (4) ·
USPC 440/21 (2) ·
USPC 440/29 (1)
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Showing below up to 29 results in range #1 to #29.
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