Drilldown: Patents
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Choose a table:
- Airplane (18)
- Airship (15)
- Companies (475)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17514)
- Person (2101)
- Publications (24554)
- Techtypes (2370)
Patents > Year granted:
1850 - 1859
& National tech categories:
None
& Family year:
1800 - 1899
& Number of diagram pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
Use the filters below to narrow your results.
None (1) ·
balloon (1) ·
Churn (1) ·
dirigible (1) ·
flapping (1) ·
hydrogen (1) ·
LTA (2) ·
marine propeller (1) ·
nacelle (1) ·
navigation (1) ·
paddle-wheel (1) ·
paddle-wheels (3) ·
parachute (1) ·
piloting (1) ·
propellers (1) ·
propulsion (3) ·
rame (1) ·
safety (1) ·
stability (1) ·
water-wheel (1)
Showing below up to 10 results in range #1 to #10.