Patent US1444070A successfully refreshed from Google Patents.
Patent US1505934A successfully refreshed from Google Patents.
US1505934A
Expired / Lapsed
US
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Device for the continuous treatment of ligneous materials for their transformation in cellulose
Assignee: Olier SA Ets A
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Filing: 1921-12-15
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Granted: 1924-08-19
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Expires: 1941-12-15
Abstract
No abstract record available.
Inventors
- 👤 Olier Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:57
CPC Classifications
D; D21; D21C; D21C3/00; D21C3/22; D21C3/24
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) | 1927-08-19 | 1928-02-18 | 1928-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-19 | 1932-02-18 | 1932-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-19 | 1936-02-18 | 1936-08-19 | $7700.00 | Window Closed / Lapsed |