Drilldown: Patents
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Patents > Office
:
DEG
or
FR
or
IN
or
Other
& Grant date:
1920 - 1929
& IPCs
:
IPC B64C3/00
or
IPC B64C35/00
or
IPC B64C39/00
& Number of text pages:
4 ![](/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)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
Use the filters below to narrow your results.
CPC B21D51/383 (1) ·
CPC B63H1/04 (1) ·
CPC B63H5/02 (1) ·
CPC B64C2700/6233 (1) ·
CPC B64C2700/6235 (1) ·
CPC B64C3/00 (2) ·
CPC B64C3/54 (1) ·
CPC B64C3/546 (1) ·
CPC B64C35/00 (2) ·
CPC B64C39/003 (1) ·
CPC F03D3/02 (1) ·
CPC F03D3/0445 (1) ·
CPC F03D3/0472 (1) ·
CPC F05B2210/16 (1) ·
CPC Y02E10/74 (1) ·
CPC Y02T50/145 (1)
Showing below up to 6 results in range #1 to #6.