Drilldown: Patents
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Patents > Office :
BE or
CA or
Other
& Filing date:
1880 - 1889
& Application number:
None
& Grant date:
1881
& Related to aircraft :
.5 or
0? or
1906314176 or
`1 or
frame
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.