Drilldown: Patents
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Patents > Year filed:
1912
& Filing date:
1910 - 1919
& National tech categories
:
FR 6.3
or
FR 6.4
or
USPC 244/153R
& IPCs:
IPC B64C17/00
& First filing
:
No
or
None
& Number of text pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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