Drilldown: Patents
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- Airplane (18)
- Airship (15)
- Companies (475)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17491)
- Person (2094)
- Publications (24551)
- Techtypes (2366)
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Year filed:
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None (4) ·
1897 (2) ·
1898 (3) ·
1899 (6) ·
1900 (5) ·
1901 (4) ·
1902 (11) ·
1903 (8) ·
1904 (3) ·
1905 (4) ·
1906 (2) ·
1907 (2) ·
1908 (4) ·
1909 (11) ·
1910 (33) ·
1911 (34) ·
1912 (28) ·
1913 (56) ·
1914 (32) ·
1915 (17) ·
1916 (13) ·
1917 (3) ·
1918 (10) ·
1919 (16) ·
1920 (11) ·
1921 (2) ·
1922 (6) ·
1923 (1) ·
1924 (2) ·
1925 (1)
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Tech fields:
airplane (157) ·
Design (106) ·
Propellers (85) ·
Subsystem (69) ·
Construction (63) ·
frame (55) ·
airship (53) ·
stability (51) ·
wings (47) ·
Whole (47) ·
Propulsion (46) ·
aerodynamics (42) ·
LTA (41) ·
automatic stability (29) ·
control (24) ·
Lift (21) ·
steering (19) ·
Dirigibles (19) ·
flapping (18) ·
helicopter (17)
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Citations from after 1930:
Number of text pages:
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Showing below up to 250 results in range #1 to #250.
