US2898933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control apparatus
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1956-10-11
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Granted: 1959-08-11
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Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 George H Bancroft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/246; G01F23/247; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306; Y10T137/7358; Y10T137/7368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2318479A
Cited
US2756765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |