US2712812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cylinder
Assignee: RUCKSTELL Corp
•
Filing: 1951-06-26
•
Granted: 1955-07-12
•
Expires: 1971-06-26
Abstract
No abstract record available.
Inventors
- 👤 Glover E Ruckstell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:05
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/04; F02B75/041; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; F02F1/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR424671A
Cited
US1057063A
Cited
US1093659A
Cited
US1532788A
Cited
US1896098A
Cited
FR739716A
Cited
US2137391A
Cited
US2189600A
Cited
US2226595A
Cited
US2276393A
Cited
US2374380A
Cited
US2400575A
Cited
US2525131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |