US2469801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater
Assignee: HOTPOINT Inc
•
Filing: 1945-12-03
•
Granted: 1949-05-10
•
Expires: 1965-12-03
Abstract
No abstract record available.
Inventors
- 👤 Oliver G Vogel
- 👤 Ziffrin Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:22
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2023603A
Cited
US2034539A
Cited
US2188399A
Cited
US2145020A
Cited
US2343040A
Cited
US2423184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |