US2997006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal reactor
Assignee: Individual
•
Filing: 1953-10-23
•
Granted: 1961-08-22
•
Expires: 1973-10-23
Abstract
No abstract record available.
Inventors
- 👤 Aristid V Grosse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:42
CPC Classifications
F; F27; F27B; F27B7/00; F27B3/00; F27B3/06; F27B7/20; F27B7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430101A
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US1079151A
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US1506323A
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US1506322A
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US1532930A
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GB323866A
Cited
US1980263A
Cited
GB372429A
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US2289682A
Cited
US2273707A
Cited
US2535316A
Cited
US2454733A
Cited
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 |