Drilldown: Patents
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Patents > National tech categories:
USPC 244/153R
& Family year:
1800 - 1899
& Number of text pages:
2-3
Use the filters below to narrow your results.
airfoil (1) ·
cargo (1) ·
collapsible (1) ·
covering (1) ·
frame (5) ·
kite (9) ·
metal (1) ·
parachute (1) ·
photography (1) ·
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wind (1) ·
wood (1)
Showing below up to 9 results in range #1 to #9.