US2702589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil pressure operated draft control for oil burners
Assignee: Individual
•
Filing: 1952-03-25
•
Granted: 1955-02-22
•
Expires: 1972-03-25
Abstract
No abstract record available.
Inventors
- 👤 Morgan F Gamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:52
CPC Classifications
F; F23; F23N; F23N3/00; F23N3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1684079A
Cited
US1651060A
Cited
US1690329A
Cited
US1873656A
Cited
US2049730A
Cited
GB403473A
Cited
US2330191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |