US2888911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas water heater
Assignee: CONTINENTAL WATER HEATER Co
•
Filing: 1954-04-13
•
Granted: 1959-06-02
•
Expires: 1974-04-13
Abstract
No abstract record available.
Inventors
- 👤 Seymour H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:44
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205; F24H1/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1202222A
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US1470209A
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US1582881A
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GB321274A
Cited
US1847497A
Cited
US2243249A
Cited
US2043540A
Cited
US2190349A
Cited
US2480657A
Cited
US2789555A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |