Drilldown: Patents
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Patents > Inventor country :
FR or
GB or
RO
& Grant date:
April 1906
& Publication date:
1900 - 1909
& National tech categories :
DE 77h.5 or
FR 6.4 or
GB 4 without buoyant or
USPC 244/153R
& Cites these patents:
None
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Showing below up to 5 results in range #1 to #5.