Patent US2847953A successfully refreshed from Google Patents.
US2847953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flue for gas water heaters
Assignee: Meat Packers Equipment Co
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Filing: 1956-04-13
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Granted: 1958-08-19
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Albert C Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:29
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/0005; F23; F23M; F23M9/00; F24H1/00; F24H1/18; F24H1/20; F24H1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |