US3495457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material level sensing device
Assignee: MECHTRON GENCO CORP
•
Filing: 1967-10-27
•
Granted: 1970-02-17
•
Expires: 1987-10-27
Abstract
No abstract record available.
Inventors
- 👤 William T Hage
- 👤 Ernest A Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:37
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US937213A
Cited
US1023582A
Cited
US1987242A
Cited
GB716958A
Cited
US2713793A
Cited
US2955466A
Cited
US3153342A
Cited
US3350940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |