Patent US2894109A successfully refreshed from Google Patents.
US2894109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commercial water heater
Assignee: KENDON DEVELOPMENTS Ltd
•
Filing: 1957-08-22
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Granted: 1959-07-07
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Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Kendon Owen Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:47
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2021; F24H15/00; F24H15/10; F24H15/174; F24H15/30; F24H15/355; F24H15/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US450896A
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US1450833A
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US1657144A
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US1737834A
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US1726789A
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US1930551A
Cited
US1959933A
Cited
US2176539A
Cited
US2355975A
Cited
US2616023A
Cited
US2813965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |