Patent US2490934A successfully refreshed from Google Patents.
US2490934A
Expired / Lapsed
US
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Electric heater
Assignee: HOTPOINT Inc
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Filing: 1946-02-28
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Granted: 1949-12-13
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Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Oliver G Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:17
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49089; Y10T29/49098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1263351A
Cited
US1857614A
Cited
GB365726A
Cited
US2043196A
Cited
GB431453A
Cited
US2177508A
Cited
GB465861A
Cited
US2242203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |