US1623804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for internal-combustion engines
Assignee: Individual
•
Filing: 1922-12-09
•
Granted: 1927-04-05
•
Expires: 1942-12-09
Abstract
No abstract record available.
Inventors
- 👤 Wellington W Muir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:35
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/22; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909
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) | 1930-04-04 | 1930-10-04 | 1931-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-04-04 | 1934-10-04 | 1935-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-04-04 | 1938-10-04 | 1939-04-05 | $7700.00 | Window Closed / Lapsed |