Patent US3127902A successfully refreshed from Google Patents.
US3127902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water level indicator
Assignee: GS Blakeslee and Co
•
Filing: 1963-02-12
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Granted: 1964-04-07
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Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Cumming John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:55
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1295232A
Cited
US1475489A
Cited
US1417162A
Cited
GB234455A
Cited
US2619435A
Cited
US2613837A
Cited
US2677382A
Cited
US2808842A
Cited
US2771892A
Cited
US3108607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |