Drilldown: Patents

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Patents > Office : DE or FR or NL or UN & Related to aircraft : 1 or 1906314176 or navigation & Patent agent : A.C. Gebhard en Mr. F.L. Kleyn or None & Number of figures: None

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Office: (Click arrow to add another value)
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Tech fields:
None (1008) · LTA (82) · airplane (50) · balloon (44) · propulsion (42) · navigation (39) · instrument (23) · stability (18) · propeller (17) · gas (16) · dirigible (14) · parachute (13) · subsystem (13) · engine (13) · balloons (12) · ICE (11) · control (10) · piloting (9) · motor (9) · Airship (9)
Full specification filed date:
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Patent agent: (Click arrow to add another value)
National tech categories:
None (1100) · FR 6.4 (42) · FR 6.3 (38) · DE 77 (16) · DE 77h.5 (14) · DE 77h (14) · DE 77h.4 (10) · DE 77h.15 (8) · FR 5 (7) · DE 77h.6 (7) · DE 77h.3 (7) · NL 62 (6) · DE 77h.9 (4) · DE 46c.5 (3) · FR 6 (3) · DE 77h.2 (3) · DE 77h.1 (2) · DE 46b (2) · NL 62.6 (2) · DE 42c.41 (2)
IPCs:
None (1229) · IPC B64B1/00 (10) · IPC B64C17/00 (8) · IPC B64C39/00 (5) · IPC B64C1/00 (5) · IPC B64B1/62 (4) · IPC B64C13/00 (4) · IPC B64B1/40 (3) · IPC B64B1/58 (3) · IPC B64C11/00 (3) · IPC B64B1/14 (2) · IPC B64C27/04 (2) · IPC B64C3/00 (2) · IPC B64D27/04 (2) · IPC B64C23/00 (2) · IPC B64C33/02 (2) · IPC B64C33/00 (2) · IPC B64C11/20 (2)
First filing:
Citations from after 1930:
Number of text pages:
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