US2706970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High compression ignition internal combustion engines
Assignee: Individual
•
Filing: 1952-03-04
•
Granted: 1955-04-26
•
Expires: 1972-03-04
Abstract
No abstract record available.
Inventors
- 👤 Rinne John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:42
CPC Classifications
F; F02; F02B; F02B25/00; F02B2720/00; F02B2720/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB397015A
Cited
FR743150A
Cited
GB142971A
Cited
US1746876A
Cited
US1841119A
Cited
US2014678A
Cited
US2443502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |