US3479865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary liquid level measurement device
Assignee: Schneider Electric Systems USA Inc
•
Filing: 1968-04-05
•
Granted: 1969-11-25
•
Expires: 1988-04-05
Abstract
No abstract record available.
Inventors
- 👤 Frederic A Sonnenberg
- 👤 George Devries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:17
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/164; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB280275A
Cited
US2756017A
Cited
US2795348A
Cited
US2964030A
Cited
US3153935A
Cited
US3229527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |