Patent US2175470A successfully refreshed from Google Patents.
US1473668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-cooling system
Assignee: Individual
•
Filing: 1918-06-03
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Granted: 1923-11-13
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Expires: 1938-06-03
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Byrnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/10
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) | 1926-11-12 | 1927-05-14 | 1927-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-12 | 1931-05-14 | 1931-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-12 | 1935-05-14 | 1935-11-13 | $7700.00 | Window Closed / Lapsed |