US2651200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank gauge
Assignee: Individual
•
Filing: 1946-08-15
•
Granted: 1953-09-08
•
Expires: 1966-08-15
Abstract
No abstract record available.
Inventors
- 👤 Bearl E Colburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:37
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1072122A
Cited
US1225108A
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US1716399A
Cited
US1634165A
Cited
GB298149A
Cited
US1920971A
Cited
US1937231A
Cited
US2255310A
Cited
US2309497A
Cited
US2446844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |