US2463304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt level indicator for brine tanks
Assignee: Permutit Co
•
Filing: 1946-06-20
•
Granted: 1949-03-01
•
Expires: 1966-06-20
Abstract
No abstract record available.
Inventors
- 👤 Pick Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/40; G01F23/42; B; B01; B01J; B01J49/00; B01J49/75; C; C02; C02F; C02F1/00; C02F1/42; C02F1/68; C02F1/685; C02F1/687
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525668A
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US1308574A
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US721870A
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US962674A
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US1138285A
Cited
US1461722A
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US1280023A
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US1452173A
Cited
US1744493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |