Patent US3440167A successfully refreshed from Google Patents.
US3440167A
Expired / Lapsed
US
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Treatment of liquors from the treatment of raw wool
Assignee: Woolcombers Ltd
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Filing: 1966-04-05
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Granted: 1969-04-22
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Expires: 1986-04-05
Abstract
No abstract record available.
Inventors
- 👤 Edward Watson Clark
- 👤 Geoffrey F Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C11; C11B; C11B11/00; C11B11/005; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |