Patent US2262403A successfully refreshed from Google Patents.
US2262403A
Expired / Lapsed
US
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Nonpressure water heater
Assignee: Westinghouse Electric Corp
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Filing: 1940-05-08
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Granted: 1941-11-11
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Expires: 1960-05-08
Abstract
No abstract record available.
Inventors
- 👤 Edmund G Pankow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:46
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202; Y; Y10; Y10S; Y10S220/00; Y10S220/09; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2842; Y10T137/2849; Y10T137/6416; Y10T137/6606; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-11-10 | 1945-05-12 | 1945-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-10 | 1949-05-12 | 1949-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-10 | 1953-05-12 | 1953-11-11 | $7700.00 | Window Closed / Lapsed |