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Patents > Tech fields : Rudder or propeller & Number of figures: 7

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Inventors:
Henry Calder Lobnitz (3) · None (2) · Armand Dufaux (2) · Johan Peter Hemme Lund (2) · Henri Dufaux (2) · Halvor Olsen Eiane (2) · Fritz Alexander Jone (2) · William Wallace Gibson (2)
Inventor country:
Applicant person:
None (17) · Henry Calder Lobnitz (3) · Fritz Alexander Jone (2) · Halvor Olsen Eiane (2) · William Wallace Gibson (2)
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Patent agent:
None (25) · Munn & Co. (2) · Marks & Clerk (2) · H. C. Everett Co. (2)
National tech categories:
None (16) · DE 77h.5 (4) · USPC 244/51 (4) · FR 6.4 (4) · USPC 244/6 (3) · USPC 416/189 (2) · USPC 244/22 (2) · AT 77d (2)
CPCs:
None (18) · CPC B64C23/005 (6) · CPC B64B1/00 (5) · CPC B64C33/02 (4) · CPC B64C13/00 (3) · CPC B64C11/48 (3) · CPC B64C9/00 (3) · CPC B64C33/00 (2) · CPC B63H5/10 (2)
First filing:
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Citations from after 1930:
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