Drilldown: Patents
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Patents > Office
:
BE
or
FR
or
SE
& Publication date:
1919
& Supplementary to patent
:
Patent GB-1909-8531
or
Patent GB-1911-29012
or
Patent GB-1913-9997
or
Patent NO-1915-12-15 Carl Alfred Johansson
or
Patent SE-1906-23283 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.