US2649532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heater apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1952-02-08
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Granted: 1953-08-18
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Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Woodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:18
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08; F24C7/082; F24H; F24H9/00; F24H9/18; F24H9/1809; F24H9/1818; F24H9/40; F24H9/45; F24H9/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |