US2688320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston and cylinder construction for internal-combustion engines
Assignee: MASSEY HARRIS FERGUSON Ltd
•
Filing: 1951-10-23
•
Granted: 1954-09-07
•
Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 Czarnocki Witold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:41
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/02; F02B19/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1783603A
Cited
US1799498A
Cited
US2012086A
Cited
US2146032A
Cited
US2161132A
Cited
FR909930A
Cited
US2514730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |