US3622091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry fluffing pulp sheet stock
Assignee: BIDWELL HOWARD A US CITIZEN
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Filing: 1969-06-18
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Granted: 1971-11-23
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Expires: 1989-06-18
Abstract
Abstract Apparatus for dry fibering pulp sheets fed by feed rollers from plural sheet stock rolls. The fibering apparatus includes a granular surfaced multisectioned roll having a multiplicity of thin disc-ring sections supported by a driving hollow core. The multisectioned roll cooperates with an adjustable anvil plate located at the point of sheet feed.
Inventors
- 👤 Howard Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:23
CPC Classifications
B; B02; B02C; B02C4/00; B02C4/10; B02C4/18; D; D21; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/063
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |