Drilldown: Patents
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Patents > Office:
CH
& Filing date:
1910
& Supplementary to patent
:
Patent FR-1909-420322
or
Patent NO-1915-12-15 Carl Alfred Johansson
or
Patent US-1913-04-21 George Raymond Lawrence
or
None
& CPCs:
CPC B64C11/006 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.