US2916598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil pre-heater
Assignee: General Fittings Co
•
Filing: 1958-01-29
•
Granted: 1959-12-08
•
Expires: 1978-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sydney J Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1474524A
Cited
US1727881A
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US1994838A
Cited
US2403824A
Cited
US2592568A
Cited
US2781087A
Cited
US2767293A
Cited
US2824941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |