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Patents > Applicant firm : Helix Propeller G.m.b.H. or None & Number of figures: 6

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Inventor location:
None (665) · Seine (11) · England (7) · Budapest (7) · Pennsylvania (6) · London (6) · New York (6) · New York City (5) · New York county (4) · St. Louis (3) · Paris (3) · Vermont (3) · Oklahoma (3) · Berlin (3) · Allegheny county, Pennsylvania (3) · Texas (3) · Liverpool (3)
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Supplementary to patent:
None (576) · Patent NZ-1909-26981 (4) · Patent ES-1911-50083 (4) · Patent CH-1910-52816 (3) · Patent US-1916-1215295 (3) · Patent US-1913-1094989 (3) · Patent GB-1909-8531 (3) · Patent DE-1898-126955 (3) · Patent DE-1909-05-03 Hans Lohmann (3)
Related to aircraft:
IPCs:
None (357) · IPC B64C17/00 (53) · IPC B64C1/00 (40) · IPC B64C39/00 (38) · IPC B64B1/00 (26) · IPC B64C3/38 (22) · IPC B64C23/00 (19) · IPC B64C25/00 (16) · IPC B64C3/00 (13) · IPC B64C33/00 (12) · IPC B64C35/00 (11) · IPC B64B1/58 (10) · IPC B64C3/54 (9) · IPC B64C33/02 (9) · IPC B64C11/00 (9) · IPC B64C3/56 (7) · IPC B64C13/00 (7) · IPC B64C27/04 (6) · IPC B64C17/06 (6)
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