US3049011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical liquid-level gage
Assignee: IDAHO MARYLAND MINES Corp
•
Filing: 1960-12-12
•
Granted: 1962-08-14
•
Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Rodney B Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:47
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/04; G01F23/22; G01F23/28; G01F23/284; G01F23/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1521668A
Cited
US1883971A
Cited
US2090514A
Cited
US2127042A
Cited
US2614426A
Cited
US2949776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |