Drilldown: Patents
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Patents > Year granted:
1920 - 1929
& Office :
DE or
GB or
GR or
MX
& Inventor country:
AT
& Supplementary to patent :
Patent FR-1910-423792 or
Patent NO-1915-12-15 Carl Alfred Johansson or
None
& First filing:
Yes
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.