US2808011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for burning semi-liquid fuels
Assignee: Miller Hofft Inc
•
Filing: 1952-08-21
•
Granted: 1957-10-01
•
Expires: 1972-08-21
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
2026-11-01 01:42
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/32; F23G7/00; F23G7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US901232A
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US1530321A
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CH117071A
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GB305270A
Cited
US1779537A
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US2161110A
Cited
US2138278A
Cited
US2362066A
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US2357301A
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US2385955A
Cited
US2535730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |