Patent US2833267A successfully refreshed from Google Patents.
US2833267A
Expired / Lapsed
US
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Combination water heater and space heater
Assignee: Handley Brown Heater Co
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Filing: 1954-05-26
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Granted: 1958-05-06
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Expires: 1974-05-26
Abstract
No abstract record available.
Inventors
- 👤 Harold E Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:54
CPC Classifications
F; F24; F24H; F24H6/00; F24H1/00; F24H1/18; F24H1/20; F24H1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1753190A
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US2023602A
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US2006849A
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US2225023A
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GB581028A
Cited
US2470571A
Cited
US2684667A
Cited
US2625150A
Cited
US2573004A
Cited
US2654361A
Cited
US2643323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |