US2560197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating internal-combustion engines and means for the performance of that method
Assignee: Individual
•
Filing: 1949-04-04
•
Granted: 1951-07-10
•
Expires: 1969-04-04
Abstract
No abstract record available.
Inventors
- 👤 Spillane Paul Xavier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:03
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/022; F02M25/032; F02M25/035; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1328844A
Cited
US1344793A
Cited
US1338511A
Cited
US1547985A
Cited
US1623452A
Cited
US1633251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |