Drilldown: Patents

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Patents > Tech fields : Lift or propellers & Patent agent: None

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Full specification filed date:
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Supplementary to patent:
None (303) · Patent GB-1908-4519 (6) · Patent FR-1841-9265 (6) · Patent US-1909-970771 (5) · Patent BE-1909-214032 (5) · Patent FR-1909-403985 (3) · Patent FR-1908-404631 (3) · Patent FR-1910-423792 (3) · Patent GB-1909-2111 (3)
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Patent agent: (Click arrow to add another value)
National tech categories:
HU V/h (116) · None (115) · FR 6.4 (52) · AT 77d (36) · BE K (32) · FR 6.2 (17) · FR 6.3 (16) · DK 77 (9) · DE 77h.6 (9) · DE 77h.5 (7) · FR 6 (6) · NL 62 (5) · DE 77h.7 (3) · IT 8 (3)
IPCs:
None (348) · IPC B64C11/00 (14) · IPC B64C39/00 (11) · IPC B64C1/00 (9) · IPC B64B1/00 (8) · IPC B64C17/00 (8) · IPC B64C11/04 (6) · IPC B64C11/20 (6) · IPC B63H1/12 (5) · IPC B64C11/16 (5) · IPC B64C33/00 (4) · IPC B64C3/14 (4) · IPC B64C3/00 (4) · IPC B64C23/00 (4) · IPC B64C27/04 (3)
CPCs:
None (291) · CPC B64C17/00 (12) · CPC B64C11/006 (10) · CPC B64C39/00 (9) · CPC B64B1/00 (9) · CPC B64C11/16 (7) · CPC B64C13/00 (7) · CPC B64C2700/6218 (6) · CPC B64C23/005 (6) · CPC B64C11/04 (6) · CPC B64C3/14 (5) · CPC B64C11/20 (5) · CPC B64C33/00 (5) · CPC B64C11/00 (5) · CPC B63H1/26 (5) · CPC B64C2700/6295 (5) · CPC B63H1/12 (5)
First filing:
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