Patent US2159258A successfully refreshed from Google Patents.
US2159258A
Expired / Lapsed
US
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Method and apparatus for digesting fibrous or cellular material
Assignee: Individual
•
Filing: 1934-05-28
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Granted: 1939-05-23
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Expires: 1954-05-28
Abstract
No abstract record available.
Inventors
- 👤 Joaquin Julio De La Roza Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
D; D21; D21C; D21C1/00; F; F04; F04C; F04C2210/00; F04C2210/26; Y; Y10; Y10S; Y10S162/00; Y10S162/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-05-22 | 1942-11-21 | 1943-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-22 | 1946-11-21 | 1947-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-22 | 1950-11-21 | 1951-05-23 | $7700.00 | Window Closed / Lapsed |