US2482460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed propeller drive system
Assignee: Wright Aeronautical Corp
•
Filing: 1941-10-10
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Granted: 1949-09-20
•
Expires: 1961-10-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:13
CPC Classifications
B; B64; B64D; B64D35/00; B64D35/04; F; F16; F16H; F16H61/00; F16H61/02; F16H2718/00; F16H2718/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242; Y10T74/19251; Y10T74/19256; Y10T74/1926; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19447
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR743191A
Cited
USRE21198E
Cited
US784285A
Cited
US861366A
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US907711A
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US1654432A
Cited
US1726329A
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US1823113A
Cited
US1717294A
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US1769193A
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US1795135A
Cited
US1755804A
Cited
US1949263A
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US1955455A
Cited
US2059122A
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US1993454A
Cited
US2003857A
Cited
US1995467A
Cited
US1983827A
Cited
GB432124A
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US2056050A
Cited
US2102781A
Cited
US2177872A
Cited
GB460149A
Cited
US2217364A
Cited
US2133656A
Cited
US2220996A
Cited
US2223716A
Cited
US2225121A
Cited
FR851130A
Cited
US2283965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |