Drilldown: Patents
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Choose a table:
- Airplane (18)
- Airship (15)
- Companies (481)
- Event (141)
- Letters (683)
- Organizations (969)
- Patents (17647)
- Person (2203)
- Publications (24577)
- Techtypes (2416)
Patents > Year granted:
1890 - 1899
& National tech categories:
USPC 244/28
& Family year:
1800 - 1899
& Number of text pages:
2-3
Use the filters below to narrow your results.
balloon (1) ·
car (4) ·
electricity (1) ·
flapping (4) ·
frame (2) ·
LTA (4) ·
propeller (1) ·
propulsion (3) ·
rudder (2) ·
sail (1)
Showing below up to 4 results in range #1 to #4.