Drilldown: Patents
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Patents > Office
:
CA
or
CL
or
US
or
Other
& Inventor country:
VN
& Publication date:
1900 - 1999
& CPCs:
CPC B64C2700/6218
& Citations from after 1930:
None
& Number of claims:
2-4 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 2 results in range #1 to #2.