Patent US2556872A successfully refreshed from Google Patents.
US2556872A
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Liquid level control system and valve therefor
Assignee: Red Jacket Manufacturing Co
•
Filing: 1946-04-08
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Granted: 1951-06-12
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Expires: 1966-04-08
Abstract
No abstract record available.
Inventors
- 👤 Elmer M Deters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; G; G05; G05D; G05D9/00; G05D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7381; Y10T137/74; Y10T137/7407; Y10T137/741; Y10T137/7439; Y10T137/7485
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |