Drilldown: Patents
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Patents > Office
:
FR
or
NZ
& Filing date:
1917
& National tech categories
:
FR 6.4
or
HU V/h
or
USPC 244/22
& IPCs:
IPC B64B1/00
& Number of text pages:
1-2
& Number of diagram pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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