Drilldown: Patents
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Patents > Office
:
CL
or
DE
or
FR
& Applicant firm:
None
& Applicant is inventor
:
No
or
Yes
& Filing date:
1880 - 1889
& IPCs:
IPC F02K9/42 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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