Drilldown: Patents
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Patents > Filing date:
1914
& Publication date:
April 1915
& National tech categories
:
FR 6.2
or
FR 6.3
or
FR 6.4
& IPCs
:
IPC B64B1/40
or
IPC B64C35/00
& CPCs:
CPC B64C35/00 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.