US2601894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid low-level warning device
Assignee: Individual
•
Filing: 1947-12-17
•
Granted: 1952-07-01
•
Expires: 1967-12-17
Abstract
No abstract record available.
Inventors
- 👤 John F Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:17
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/0007; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86284; Y10T137/86348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1028377A
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US1470775A
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US1602855A
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US1812012A
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US1714250A
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US1906277A
Cited
US2327195A
Cited
US2393423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |