US2725929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber type burner
Assignee: Selas Corp of America
•
Filing: 1951-11-24
•
Granted: 1955-12-06
•
Expires: 1971-11-24
Abstract
No abstract record available.
Inventors
- 👤 Massier John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:08
CPC Classifications
F; F23; F23C; F23C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22886E
Cited
US1063352A
Cited
US1172755A
Cited
US1626116A
Cited
US2206553A
Cited
US2638895A
Cited
US2575070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |