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US3413969A
Expired / Lapsed
US
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Hot water supply system having means to prevent override of temperature
Assignee: Raypak Co Inc
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Filing: 1966-12-28
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Granted: 1968-12-03
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Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred Whittell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:38
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1006; F24D19/1066; F24D19/1069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1773976A
Cited
US1983199A
Cited
US2245967A
Cited
US2224240A
Cited
US2751156A
Cited
US2884197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |