US878618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of decolorizing tannic extracts.
Assignee: Individual
•
Filing: 1906-07-25
•
Granted: 1908-02-11
•
Expires: 1926-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lorenzo Dufour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:54
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/10; C14C3/12; C07; C07C; C07C37/00
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) | 1911-02-10 | 1911-08-12 | 1912-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-02-10 | 1915-08-12 | 1916-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-02-10 | 1919-08-12 | 1920-02-11 | $7700.00 | Window Closed / Lapsed |