US2423140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system, thermostat control
Assignee: Evans Products Co
•
Filing: 1945-02-07
•
Granted: 1947-07-01
•
Expires: 1965-02-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Earley
- 👤 Norman B Earley
- 👤 Elmore J Sanders
- 👤 Willard C Skareen
- 👤 Ray L Davies
- 👤 Joseph A Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:40
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/06; F01P5/00; F01P5/10; F01P5/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |