Drilldown: Patents
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Patents > Applicant type:
INDIV
& Supplementary to patent
:
Patent US-1890-439421
or
Patent US-1913-04-21 George Raymond Lawrence
& National tech categories
:
DE 77
or
USPC 244/30
or
USPC 244/90R
or
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 4 results in range #1 to #4.