US2551758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control valve for condenser coolant
Assignee: Old Carco LLC
•
Filing: 1947-02-12
•
Granted: 1951-05-08
•
Expires: 1967-02-12
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:49
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; F25B2339/00; F25B2339/04; F25B2339/047; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/7722; Y10T137/7781; Y10T137/7782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1638053A
Cited
US1925281A
Cited
US2096112A
Cited
US2011220A
Cited
US2228767A
Cited
US2297231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |