US2799260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for internal combustion engines
Assignee: Individual
•
Filing: 1955-10-13
•
Granted: 1957-07-16
•
Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Charles R Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:54
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/02; F01P11/0204; F01P11/0209; F01P11/0238; F01P11/0285
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1630069A
Cited
US2201314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |