US2497151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multidisk rotor
Assignee: Armstrong Siddeley Motors Ltd
•
Filing: 1946-11-13
•
Granted: 1950-02-14
•
Expires: 1966-11-13
Abstract
No abstract record available.
Inventors
- 👤 Clark Thomas
- 👤 Atkins John Harry Clapham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE492252C
Cited
US784371A
Cited
US770207A
Cited
US910311A
Cited
AT74422B
Cited
US2058479A
Cited
US2356605A
Cited
FR873700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |