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US2694768A
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Hot-water generator
Assignee: Individual
•
Filing: 1952-02-16
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Granted: 1954-11-16
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Expires: 1972-02-16
Abstract
No abstract record available.
Inventors
- 👤 Theodor H F Stiebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/102; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1198073A
Cited
US1419225A
Cited
US1494326A
Cited
US1920284A
Cited
US2347122A
Cited
US2380132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |