Drilldown: Patents
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- Techtypes (2375)
Patents > Office
:
DE
or
GR
& Applicant is inventor:
Yes
& National tech categories
:
DE 77h.4
or
IT 8
& CPCs
:
CPC B64B1/58
or
CPC B64C13/00
or
CPC B64C3/385
& Family year:
1910 - 1919 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 3 results in range #1 to #3.