Drilldown: Patents
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Patents > Office :
CH or
IT
& Related to aircraft :
0.5 or
0? or
1909-11-30 or
1911-07-04 or
Jan 15, 1908 or
Yes
& National tech categories:
CH 115
& Number of text pages:
2
& Number of claims:
1-3
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.