Drilldown: Patents
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Patents > Year filed:
1914
& Office :
BE or
IN
& Supplementary to patent :
Patent FR-1913-468076 or
Patent SE-1906-23283
& National tech categories :
BE K or
USPC 244/80
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.