Drilldown: Patents

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Patents > Applicant firm: None & Applicant type: INDIV & Tech fields : Propellers or navigation

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FR (581) · US (373) · DE (169) · GB (142) · HU (64) · None (64) · AT (53) · BE (45) · IT (29) · CH (25) · CA (19) · RO (13) · AU (13) · AH (12) · ES (10) · NL (9) · RU (9) · MX (8) · BR (7) · Poland (7)
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IPCs:
None (826) · IPC B64C39/00 (84) · IPC B64B1/00 (76) · IPC B64C11/00 (71) · IPC B64C23/00 (35) · IPC B64C33/02 (28) · IPC B64C17/00 (26) · IPC B64C1/00 (26) · IPC B64C27/04 (23) · IPC B64C11/16 (22) · IPC B64C11/04 (20) · IPC B63H1/12 (20) · IPC B64C11/20 (18) · IPC B64B1/58 (18) · IPC B64C13/00 (17) · IPC CPC B64C13/00 (15) · IPC B64C3/38 (15) · IPC B64B1/62 (14) · IPC B64B1/40 (13)
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Citations from after 1930:
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