US2923797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature cut-off switch and immersed rod assembly for hot water generating tanks
Assignee: LUXRA Co
•
Filing: 1957-07-01
•
Granted: 1960-02-02
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Thelen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1981299A
Cited
US2141775A
Cited
US2312479A
Cited
US2459123A
Cited
US2566372A
Cited
US2707738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |