Drilldown: Patents
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Patents > Year filed:
1910 - 1919
& Supplementary to patent:
Patent US-1913-1094989
& National tech categories :
DE 77h.15 or
FR 6.4 or
USPC 244/153R
& Family year:
1913
& Number of text pages:
2
& Number of figures:
6
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Showing below up to 1 result in range #1 to #1.