US3484774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically actuated liquid level indicator
Assignee: Individual
•
Filing: 1967-08-23
•
Granted: 1969-12-16
•
Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ejvind Cai Borgnakke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:25
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/76; G01F23/64; G01F23/68; G01F23/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US911786A
Cited
US2220675A
Cited
US2339922A
Cited
US2554374A
Cited
US2603090A
Cited
US2707395A
Cited
US2752461A
Cited
US3155792A
Cited
US3224270A
Cited
US3200645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |