US3407805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for submerged combustion heating
Assignee: Ateliers J Hanrez SA
•
Filing: 1966-11-29
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Granted: 1968-10-29
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Bougard Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:39
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/107; F22; F22B; F22B1/00; F22B1/22; F22B1/26; F22B1/265; F23; F23C; F23C3/00; F23C3/004; F23D; F23D14/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2358302A
Cited
US2677368A
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US2878644A
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US3060921A
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US3224431A
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US3171405A
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US3291119A
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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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |