US3527687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for remote determination of liquid levels
Assignee: Raytheon Co
•
Filing: 1966-06-13
•
Granted: 1970-09-08
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Boris T Subbotin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:38
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1380183A
Cited
US1454531A
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US1950595A
Cited
US1961893A
Cited
US2701790A
Cited
US2773497A
Cited
US3045665A
Cited
US3336215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |