US2884998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel slot gas burner
Assignee: FRASER AND JOHNSTON CO
•
Filing: 1954-12-20
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Granted: 1959-05-05
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Roland R Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; F23D14/583; F23D14/586
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1130073A
Cited
US1436420A
Cited
GB188684A
Cited
US1561966A
Cited
US1839796A
Cited
US2588895A
Cited
US2541428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |