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Patents > Year filed: 1917 & Inventor country : DE or NL & Granted: Yes

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Tech fields:
Airship (21) · airplane (20) · design (19) · instrument (14) · Frame (12) · construction (12) · subsystem (12) · LTA (12) · control (11) · propellers (10) · gas (9) · propeller (9) · None (8) · wings (8) · safety (8) · aerodynamics (7) · propulsion (7)
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None (70)
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Supplementary to patent:
None (67) · Patent DE-1916-10-07 Oscar Gerhardt (2) · Patent DE-1917-305040 (2) · Patent DE-1916-332540 (2) · Patent DE-1917-02-16 Oscar Gerhardt (2)
Related to aircraft:
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CPCs:
None (71) · CPC B64C13/00 (8) · CPC B64C2700/6235 (2) · CPC B64C2700/6233 (2) · CPC B64C9/02 (2) · CPC B64F1/221 (2) · CPC B64C11/34 (2) · CPC B64C3/00 (2)
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Showing below up to 114 results in range #1 to #114.

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