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Patents > Supplementary to patent: None & Assigned to: None & Citations from after 1930: 1-2

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None (445) · Seine (8) · Pennsylvania (6) · London (5) · New York (4) · Cleveland (4) · St. Louis (3) · Los Angeles (3) · Indiana (3) · Ohio (3) · Philadelphia (3) · PA (3) · Allegheny county, Pennsylvania (3)
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Tech fields:
None (142) · propeller (54) · Airplane (54) · stability (52) · propulsion (46) · LTA (45) · frame (40) · navigation (32) · helicopter (21) · control (21) · rudder (20) · parachute (20) · marine (18) · wheels (17) · safety (16) · construction (15) · aerial propeller (15) · car (15)
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National tech categories:
None (235) · FR 6.4 (54) · USPC 244/45R (10) · USPC 244/80 (9) · USPC 244/119 (7) · USPC 244/22 (7) · USPC 244/64 (7) · USPC 244/90R (6) · USPC 244/177 (6) · USPC 244/3.23 (6) · USPC 244/66 (6) · USPC 244/20 (5) · USPC 244/6 (5) · USPC 244/93 (4) · USPC 244/67 (4) · USPC 244/133 (4) · USPC 244/17.19 (4) · USPC 244/65 (4) · USPC 244/35R (4) · USPC 244/9 (4)
IPCs:
None (316) · IPC B64C3/00 (18) · IPC B64B1/00 (16) · IPC B64C1/00 (16) · IPC B64C39/00 (14) · IPC B64C23/00 (11) · IPC B64C17/00 (11) · IPC B64C3/38 (10) · IPC B64C33/02 (9) · IPC B64C3/54 (8) · IPC B64C25/00 (8) · IPC B64C35/00 (7) · IPC B64C33/00 (6) · IPC B64C31/06 (5) · IPC B64B1/62 (4) · IPC B64C13/24 (4) · IPC B64C13/00 (4) · IPC B64C3/18 (4) · IPC F42B10/00 (4)
CPCs:
CPC B64C17/00 (29) · CPC B64C23/005 (28) · CPC B64B1/00 (27) · CPC B64C3/385 (22) · CPC B64C33/02 (21) · CPC B64C3/00 (20) · CPC B64C2700/6295 (20) · CPC B64C13/00 (18) · CPC B64C39/005 (17) · CPC B64C11/48 (17) · CPC B64C27/54 (17) · None (13) · CPC B64C39/08 (13) · CPC B64C11/36 (12) · CPC B64C11/006 (12) · CPC B64C35/00 (12) · CPC B64C2700/6235 (10) · CPC B64C2700/6274 (8) · CPC B64C3/14 (8)
First filing:
Citations from after 1930:
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