US2577918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air jacketed combustion chamber flame tube
Assignee: MW Kellogg Co
•
Filing: 1946-05-08
•
Granted: 1951-12-11
•
Expires: 1966-05-08
Abstract
No abstract record available.
Inventors
- 👤 Harold E Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:34
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/12; F23R3/14; F23R3/28; F23R3/34; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1375601A
Cited
US1508718A
Cited
US1491158A
Cited
US2241611A
Cited
US2404335A
Cited
US2398654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |