Drilldown: Patents
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Patents > Year filed:
1912
& Office :
FR or
GB
& Applicant firm:
None
& Filing date:
November 1912
& Application number:
16736D
& National tech categories :
FR 6.4 or
USPC 244/3.23
& Number of text pages:
1-2
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Showing below up to 1 result in range #1 to #1.