Drilldown: Patents
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Patents > Year filed:
1912
& Related to aircraft :
1911-07-04 or
yes, Jul 6 1908 or
None
& Assigned to:
Fred Singer
& CPCs :
CPC B64C23/005 or
CPC B64C2700/6256 or
CPC B64C2700/6295
& Number of figures:
8-9
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