US1357981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for engines
Assignee: Individual
•
Filing: 1919-09-02
•
Granted: 1920-11-09
•
Expires: 1939-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ned E Hildreth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:51
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/18; Y; Y10; Y10S; Y10S415/00; Y10S415/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1923-11-09 | 1924-05-10 | 1924-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-11-09 | 1928-05-10 | 1928-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-11-09 | 1932-05-10 | 1932-11-09 | $7700.00 | Window Closed / Lapsed |