Patent US3411986A successfully refreshed from Google Patents.
US3411986A
Expired / Lapsed
US
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Axial flow rotary feeder for cellulose digester
Assignee: Beloit Corp
•
Filing: 1965-08-04
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Granted: 1968-11-19
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Expires: 1985-08-04
Abstract
No abstract record available.
Inventors
- 👤 Ronald L Buchberger
- 👤 Arnold J Roerig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:29
CPC Classifications
D; D21; D21C; D21C7/00; D21C7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86662; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3180789A
Cited
US3215591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |