US2675620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level indicator
Assignee: Sherwin Williams Co
•
Filing: 1951-02-23
•
Granted: 1954-04-20
•
Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Whitcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:30
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; B; B44; B44D; B44D3/00; B44D3/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2269737A
Cited
US2497618A
Cited
US2561525A
Cited
US1526659A
Cited
US2098963A
Cited
US2127042A
Cited
US2169952A
Cited
US2237443A
Cited
US2326111A
Cited
US2288093A
Cited
US2311439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |