US2914955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronizing mechanism for free piston engines
Assignee: Queen's University
•
Filing: 1957-11-12
•
Granted: 1959-12-01
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 William G Colborne
- 👤 Braun Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:29
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/22; F16; F16H; F16H19/00; F16H19/001; F16H19/003; F16H19/006; Y; Y10; Y10S; Y10S92/00; Y10S92/03; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832; Y10T74/18848; Y10T74/18992
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE448916C
Cited
US1696044A
Cited
FR723953A
Cited
US2090709A
Cited
US2446423A
Cited
US2455058A
Cited
FR1115033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |