Drilldown: Patents
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Patents > Applicant type :
Hermann Burkardt or
None
& Filing date:
1910 - 1919
& Application number:
444419D
& National tech categories :
FR 6.4 or
IT 8 or
USPC 244/153R
& First filing:
No
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Showing below up to 1 result in range #1 to #1.