US2785550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary drive-transmitting coupling arrangements
Assignee: Rolls Royce PLC
•
Filing: 1953-07-08
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Granted: 1957-03-19
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Expires: 1973-07-08
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:48
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/026; F16; F16D; F16D1/00; F16D1/02; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7026; Y10T403/7035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172662A
Cited
US1381805A
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US1770744A
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US2297390A
Cited
US2525695A
Cited
US2691875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |