US3369906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialytic treatment of tea
Assignee: AMF Inc
•
Filing: 1967-08-03
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Granted: 1968-02-20
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Expires: 1987-08-03
Abstract
No abstract record available.
Inventors
- 👤 Chen William Kwo-Wei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:41
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; A; A23; A23C; A23C9/00; A23C9/14; A23C9/144; A23F; A23F3/00; A23F3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |