Drilldown: Patents
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Patents > IPCs
:
IPC B64B1/00
or
IPC B64C25/00
or
IPC B64C3/54
or
IPC B64C33/00
or
IPC B64C39/00
& Family year:
1860 - 1869 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 6 results in range #1 to #6.