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US3477571A
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US
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Apparatus and method for screening fibrous slurries
Assignee: Procter and Gamble Co
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Filing: 1966-11-14
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Granted: 1969-11-11
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Maag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:18
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/02; D21D5/06; D21D5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190611126A
Cited
US1220232A
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US1951017A
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US2866553A
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US3121660A
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US3231087A
Cited
US3221886A
Cited
US3363769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |