Drilldown: Patents
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- Publications (24559)
- Techtypes (2373)
Patents > Year filed:
1912
& Office
:
AT
or
FR
& Applicant firm:
None
& National tech categories
:
FR 6.4
or
USPC 244/3.23
& IPCs:
IPC B64C39/00
& Number of text pages:
1-2
& Number of claims:
2-3 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 4 results in range #1 to #4.