Drilldown: Patents
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Patents > Office :
?? or
FR or
LU or
MX
& Grant date:
April 2, 1909
& Supplementary to patent:
Gebrauchsmuster DE-1908-359886
& National tech categories :
FR 6.4 or
USPC 244/22
& First filing:
None
& Number of text pages:
1-2
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Showing below up to 1 result in range #1 to #1.