Drilldown: Patents
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Patents > Publication date:
1920
& National tech categories
:
FR 6.4
or
IT 8
or
USPC 244/80
& Cites these patents
:
CPC B64B1/00
or
None
& Number of text pages:
1-2
& Number of figures:
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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