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Patents > Applicant firm: None & Tech fields : propeller or wings

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US (439) · FR (423) · DE (208) · GB (166) · None (66) · AT (60) · IT (44) · HU (39) · CH (28) · RU (26) · AU (24) · BE (21) · RO (12) · NL (11) · CA (11) · AH (8) · NZ (8) · DK (6) · MX (5) · Prussia (5)
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None (1569)
IPCs:
None (899) · IPC B64C39/00 (80) · IPC B64C17/00 (52) · IPC B64C3/00 (46) · IPC B64C1/00 (45) · IPC B64B1/00 (40) · IPC B64C33/02 (36) · IPC B64C23/00 (29) · IPC B64C11/00 (28) · IPC B64C3/38 (27) · IPC B64C3/52 (21) · IPC B64C3/54 (20) · IPC B64C3/56 (19) · IPC B64C33/00 (18) · IPC B64C13/00 (17) · IPC B64C3/48 (15) · IPC B64C11/16 (15) · IPC B64C3/14 (12) · IPC B64C27/04 (10) · IPC B64C31/04 (8)
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