US2961833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control diverter
Assignee: Dole Valve Co
•
Filing: 1958-09-25
•
Granted: 1960-11-29
•
Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:31
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00642; B60H1/00814; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2247140A
Cited
US2218936A
Cited
US2282977A
Cited
US2433443A
Cited
US2402499A
Cited
US2664708A
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 |