Drilldown: Patents
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Patents > Applicant is inventor:
Yes
& Filing date:
November 13, 1909
& Application number
:
1909527784
or
25941D
or
403161D
& Grant date:
June 10, 1913
& National tech categories
:
AT 77d
or
USPC 244/80
& Family year:
1900 - 1909
& Citations from after 1930:
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