Drilldown: Patents
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Patents > Office:
US
& Filing date:
January 23, 1893
& Granted:
Yes
& Supplementary to patent :
Patent FR-1910-423792 or
None
& National tech categories:
USPC 244/30
& Citations from after 1930:
5
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Showing below up to 1 result in range #1 to #1.