US2614513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and vortex-type furnace for burning waste fuel
Assignee: HOFFT Co Inc
•
Filing: 1950-03-28
•
Granted: 1952-10-21
•
Expires: 1970-03-28
Abstract
No abstract record available.
Inventors
- 👤 Henry C L Miller
- 👤 Harry A Raddin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1091475A
Cited
US901232A
Cited
US1444833A
Cited
US1766652A
Cited
US1852968A
Cited
US2088879A
Cited
US2242653A
Cited
US2294242A
Cited
US2395103A
Cited
US2483728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |