US3588978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grooved roll for paper-making
Assignee: Beloit Corp
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Filing: 1968-12-18
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Granted: 1971-06-29
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Expires: 1988-12-18
Abstract
Abstract A roll having a plurality of grooves in the exterior surface thereof, said surface consisting of a nonwoven mat wrapping said roll and bonded with a thermosetting resin. Preferred mats for the present invention are acrylic nonwoven mats. The preferred thermosetting resin is an epoxy resin.
Inventors
- 👤 Donald A Brafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
D; D21; D21G; D21G1/00; D21G1/02; D21G1/0246; D21F; D21F3/00; D21F3/02; D21F3/08
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |