Drilldown: Patents
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Patents > Year granted:
1920 - 1929
& Office :
BE or
DE or
GR
& Inventor country:
AT
& Filing date:
August 4, 1914
& Supplementary to patent:
None
& First filing:
Yes
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.