Drilldown: Patents
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Patents > Office
:
AH
or
GB
or
HU
& Applicant firm:
None
& Assigned to:
None
& CPCs
:
CPC B64C13/00
or
CPC B64C3/385
or
CPC B64C33/02
& Family year:
1917 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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