Patent US1826299A successfully refreshed from Google Patents.
Patent US113454A successfully refreshed from Google Patents.
US113454A
Expired / Lapsed
US
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Improvement in treating paper and vegetable fibrous substances
Assignee: —
•
Filing: —
•
Granted: 1871-04-04
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Expires: 1888-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:27
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/02; D21F11/04
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) | 1874-04-03 | 1874-10-03 | 1875-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1878-04-03 | 1878-10-03 | 1879-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1882-04-03 | 1882-10-03 | 1883-04-04 | $7700.00 | Window Closed / Lapsed |