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Patents > Office: US & Tech fields : Airplane or propeller & CPCs : CPC B64C3/385 or None

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Office: (Click arrow to add another value)
Inventors:
John Thomas Simpson (2)
Inventor country:
Applicant person:
None (12) · John Thomas Simpson (2)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
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National tech categories:
USPC 244/48 (11) · None (10) · USPC 244/99.11 (4) · 1 (3) · USPC 244/90R (3) · USPC 244/38 (3) · USPC 244/131 (2) · USPC 244/119 (2) · USPC 244/113 (2)
CPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:

Showing below up to 65 results in range #1 to #65.

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