US2997286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bed furnace and process
Assignee: GEA Group AG
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Filing: 1958-12-17
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Granted: 1961-08-22
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Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Friese Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:50
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; F; F27; F27B; F27B15/00; F27B15/02; F27B15/16; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00044; B01J2208/00061; B01J2208/00088; B01J2208/00106; B01J2208/00115; B01J2208/00123; B01J2208/00132; B01J2208/0053; F28; F28F; F28F2210/00; F28F2210/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |