Drilldown: Patents
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Patents > Year granted:
1910 - 1919
& Office :
BE or
DEG or
IT or
NL or
SE
& Inventor country :
CH or
FR
& Filing date:
1912
& IPCs :
IPC B64C13/00 or
IPC B64C25/00 or
None
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.