Patent US4088211A successfully refreshed from Google Patents.
Patent US1021722A successfully refreshed from Google Patents.
Patent US3141110A successfully refreshed from Google Patents.
Patent US2627748A successfully refreshed from Google Patents.
US2627748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery liquid level indicator
Assignee: National Battery Co
•
Filing: 1948-03-18
•
Granted: 1953-02-10
•
Expires: 1968-03-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Maybach
- 👤 Almond H Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:08
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01F23/2921; G01F23/2922
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US461370A
Cited
US773154A
Cited
US1883971A
Cited
GB412803A
Cited
US2301460A
Cited
US2368705A
Cited
US2468833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |