US2547526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level indicator
Assignee: Individual
•
Filing: 1948-01-13
•
Granted: 1951-04-03
•
Expires: 1968-01-13
Abstract
No abstract record available.
Inventors
- 👤 Robert C Hilliard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:56
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18; G01F23/185
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US674867A
Cited
US1071171A
Cited
US1036869A
Cited
US1199340A
Cited
US1822203A
Cited
US2407378A
Cited
US2468945A
Cited
US2423970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |