Drilldown: Patents

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Patents > Assigned to: None & Citations from after 1930: 2-2000

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None (363) · Illinois (7) · London (6) · Seine (5) · Ohio (5) · New Jersey (4) · New York (4) · Chicago (4) · Düsseldorf (3) · Dayton (3) · Los Angeles (3) · Wisconsin (3) · Kansas (3) · Cleveland (3)
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Tech fields:
None (93) · propeller (51) · LTA (42) · Stability (36) · airplane (34) · frame (30) · military (28) · propulsion (27) · projectile (24) · kite (23) · helicopter (20) · navigation (16) · parachute (16) · Safety (16) · marine (15) · windmill (14) · aerial propeller (13) · balloon (12) · construction (12) · rudder (11)
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None (419)
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IPCs:
None (267) · IPC B64B1/00 (16) · IPC B64C31/06 (10) · IPC B64C25/00 (9) · IPC B64C3/00 (9) · IPC F42B10/00 (7) · IPC B64C39/00 (7) · IPC B64C23/00 (7) · IPC B64C31/00 (7) · IPC B64C27/04 (6) · IPC B64C17/00 (5) · IPC B64C11/20 (5) · IPC B64C1/00 (5) · IPC B64C33/02 (5)
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