USPC 244/67
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U.S. patent classification subclass 244/67 is for patents related to body-encircling propellers: Aircraft screw propellers arranged to rotate about the external periphery of aircraft bodies.[1][2]
References
- ↑ Description of category USPC 244/67 at uspto.gov
- ↑ Class 244: Aeronautics, Manual of U.S. Patent Classification, as of June 30, 2000
Patents in category USPC 244/67
- Patent US-1899-666266 (English title: Machine for aerial navigation, Inventors: Joseph H. Dillon-Gregg, Filing date: 1899-05-01)
- Patent US-1903-761062 (English title: Steering balloon, Inventors: Philippe Delbert, Supplementary to patent: Patent FR-1902-328044, Filing date: 1903-03-03)
- Patent US-1906-837784 (English title: Dirigible balloon, Inventors: Émile-Médéric Bossuet, Supplementary to patent: Patent FR-1903-333745, Filing date: 1904-06-14)
- Patent US-1905-900844 (English title: Flying-machine, Inventors: Albert Hugo Friedel, Filing date: 1905-10-23)
- Patent US-1909-916456 (English title: Airship, Inventors: Oscar J Laisy, Filing date: 1907-05-04)
- Patent US-1909-939483 (English title: Airship, Inventors: Boyd W. Dysart, Filing date: 1908-08-24)
- Patent US-1916-1189138 (Inventors: Oscar J Laisy, Filing date: 1912-09-21)
- Patent US-1913-1077004 (English title: Airship, Inventors: Frederick Sifferman, Filing date: 1912-10-08)
- Patent US-1917-1247412 (English title: Flying-machine, Inventors: Simon Lake, Filing date: 1915-10-13)
| Enclosing categories | USPC 244/65 |
|---|---|
| Subcategories | |
| Keywords | Propellers |
| Start year | |
| End year |
