Drilldown: Patents
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Patents > Inventor country:
US
& Applicant is inventor:
No
& Filing date:
1910 - 1919
& National tech categories :
FR 6.4 or
USPC 244/30
& Cites these patents :
Patent FR-1909-411204 or
None
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Showing below up to 4 results in range #1 to #4.