Drilldown: Patents
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- Airplane (18)
- Airship (15)
- Companies (480)
- Event (141)
- Letters (683)
- Organizations (966)
- Patents (17614)
- Person (2147)
- Publications (24569)
- Techtypes (2381)
Patents > Year granted:
1919
& Applicant type
:
INDIV
or
INDIV + COMPANY
& National tech categories
:
USPC 244/153R
or
None
& CPCs:
CPC B64C35/00
& Cites these patents:
None
& Citations from after 1930:
None
& Number of diagram pages:
2-3 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.