Patent US2747799A successfully refreshed from Google Patents.
US2747799A
Expired / Lapsed
US
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Liquid fuel burning apparatus and control
Assignee: Hupp Corp
•
Filing: 1952-01-23
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Granted: 1956-05-29
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Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Wilbur A Schultz
- 👤 Arthur R Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:34
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |