US2962041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brine tank control system and valve for water softeners
Assignee: Individual
•
Filing: 1957-12-12
•
Granted: 1960-11-29
•
Expires: 1977-12-12
Abstract
No abstract record available.
Inventors
- 👤 Nels A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7303; Y10T137/7358; Y10T137/7368; Y10T137/7371
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US549877A
Cited
US1191396A
Cited
US1349443A
Cited
US1393217A
Cited
US2178866A
Cited
US2616450A
Cited
US2509880A
Cited
US2660834A
Cited
US2716422A
Cited
US2820419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |