Drilldown: Patents
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Patents > Year filed:
1920 - 1929
& Filing date:
1921
& Related to aircraft
:
.5?
or
0
or
1
& Assigned to:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
None (9) ·
Patent AT-1917-87219 (1) ·
Patent AT-1917-87220 (1) ·
Patent DE-1915-300200 (1) ·
Patent DE-1916-309361 (1) ·
Patent DE-1916-332539 (1) ·
Patent DE-1916-332540 (1) ·
Patent DE-1916-332541 (1) ·
Patent DE-1919-332428 (1) ·
Patent FR-1916-501550 (1) ·
Patent FR-1921-539928 (1) ·
Patent GB-1918-140127 (1) ·
Patent HU-1917-75493 (1) ·
Patent HU-1917-76645 (1)
Showing below up to 13 results in range #1 to #13.