Drilldown: Patents
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Patents > Office :
CA or
US
& Filing date:
May 1911
& National tech categories :
HU V/h or
USPC 244/80
& IPCs :
IPC B64C17/00 or
IPC B64C23/00 or
IPC F02N5/00
& Family year:
1911
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Showing below up to 1 result in range #1 to #1.