Drilldown: Patents
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Patents > Office :
BE or
CA or
GR or
Other
& Filing date:
1880 - 1889
& Related to aircraft :
.5 or
1906314176 or
`1
& National tech categories:
USPC 244/31
& Number of figures:
6
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.