Drilldown: Patents

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Patents > Inventor country : DE or NZ or US & Assigned to : Albert L. Watters or None & IPCs : IPC B64C31/06 or None & Number of claims: 5-20

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Tech fields:
airplane (171) · frame (138) · stability (110) · None (100) · propeller (100) · propulsion (92) · navigation (88) · LTA (79) · rudder (77) · design (39) · wheels (37) · airfoil (36) · landing (35) · hybrid (34) · safety (34) · propellers (33) · car (33) · flapping (31) · subsystem (30) · marine (29)
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Supplementary to patent:
None (548) · Patent DE-1895-98580 (4) · Patent US-1910-1055379 (3) · Patent US-1909-970771 (3) · Patent US-1903-821393 (3) · Patent US-1913-1087946 (2) · Patent FR-1902-324521 (2) · Patent 1915-11-05 Käthe Paulus (2) · Patent US-1910-1011683 (2) · Patent US-1908-1077750 (2) · Patent DE-1909-06-09 Romeo Wankmüller (2) · Patent DE-1909-Wilcke-Graff (2)
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CPCs:
None (171) · CPC B64C17/00 (50) · CPC B64C13/00 (41) · CPC B64B1/00 (30) · CPC B64C23/005 (27) · CPC B64C2700/6295 (22) · CPC B64C39/005 (22) · CPC B64C39/08 (15) · CPC B64C11/006 (15) · CPC B64C3/385 (14) · CPC B64C11/48 (11) · CPC B64C33/02 (10) · CPC B64C27/54 (10) · CPC B64C3/14 (9) · CPC B64C27/82 (9) · CPC B64C33/00 (8) · CPC A63H27/08 (8) · CPC B64C3/40 (8) · CPC B64C27/12 (8)
First filing:
Citations from after 1930:

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