US2840151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner of multi section port construction
Assignee: Combustion Engineering Inc
•
Filing: 1955-09-06
•
Granted: 1958-06-24
•
Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Francis B Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:21
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/10; F23D14/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US392211A
Cited
US2732259A
Cited
US1126614A
Cited
US2541428A
Cited
US2670790A
Cited
US2652107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |