Drilldown: Patents
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Patents > Office
:
BE
or
FI
or
GB
or
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or
None
& Inventor country
:
BE
or
IT
& Filing date:
1907
& Assigned to:
None
& Citations from after 1930:
None
& Number of figures:
4-7 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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