US2372448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for regulating the co-ordinated filling and emptying of vessels
Assignee: Towler & Son Ltd
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Filing: 1942-08-25
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Granted: 1945-03-27
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Expires: 1962-08-25
Abstract
No abstract record available.
Inventors
- 👤 Porteous William King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/006; G; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0635; G05D7/0641; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/2564; Y10T137/2567; Y10T137/265; Y10T137/2668; Y10T137/2698; Y10T137/4673; Y10T137/469; Y10T137/4857; Y10T137/7287; Y10T137/7303
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) | 1948-03-26 | 1948-09-25 | 1949-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-26 | 1952-09-25 | 1953-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-26 | 1956-09-25 | 1957-03-27 | $7700.00 | Window Closed / Lapsed |