Patent US3549333A successfully refreshed from Google Patents.
US3549333A
Expired / Lapsed
US
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Recuperative form of direct thermal incinerator
Assignee: Universal Oil Products Co
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Filing: 1968-07-23
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Granted: 1970-12-22
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Expires: 1988-07-23
Abstract
No abstract record available.
Inventors
- 👤 Fernando Tabak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065; F23G7/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1063489A
Cited
US2952310A
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US3073684A
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US3090675A
Cited
US3311456A
Cited
US3353919A
Cited
US3468634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |