Drilldown: Patents
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Patents > Publication date:
1900 - 1999
& Supplementary to patent :
Patent GB-1908-4519 or
Patent GB-1911-29012 or
Patent NO-1915-12-15 Carl Alfred Johansson
& Family year:
1915
& First filing:
None
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.