Drilldown: Patents
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Patents > Office:
DE
& Filing date:
August 26, 1913
& Related to aircraft :
0.5 or
1909-11-30 or
Jan 15, 1908 or
Yes
& National tech categories :
DE 77h.5 or
GB 4 propel & steer or
USPC 244/233
& IPCs:
IPC B64C3/14
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.