Drilldown: Patents
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Patents > Year granted:
1910 - 1919
& Full specification filed date:
1914
& Granted :
No or
Yes
& IPCs :
IPC B64C1/00 or
IPC B64C25/00 or
IPC B64C33/00
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.