Patent US3434920A successfully refreshed from Google Patents.
US3434920A
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US
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Apparatus for continuous digesting
Assignee: FRANK B K GREEN
•
Filing: 1965-10-07
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Granted: 1969-03-25
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Expires: 1985-10-07
Abstract
No abstract record available.
Inventors
- 👤 Frank B K Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:02
CPC Classifications
D; D21; D21C; D21C7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA559491A
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CA692155A
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US798523A
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US2474862A
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FR1022903A
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US2766911A
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US2803540A
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US2993537A
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FR1229425A
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US3097987A
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US3298899A
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US3201007A
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US3215588A
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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) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |