Patent US3689350A successfully refreshed from Google Patents.
US3689350A
Expired / Lapsed
US
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Apparatus for the heat treatment of sheet and fibrous material
Assignee: Individual
•
Filing: 1970-05-25
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Granted: 1972-09-05
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Expires: 1990-05-25
Abstract
Abstract An apparatus for the heat treatment of sheet and fibrous material, in particular for carrying out a thermoimpression process, comprising a rotatable drum heated to a predetermined temperature against which the materials to be heated are applied by an endless belt whose linear velocity is equal to the angular velocity at the surface of the drum. The endless belt encompasses the major portion of the drum.
Inventors
- 👤 Henry Renaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:54
CPC Classifications
B; B41; B41F; B41F16/00; B41F16/02; D; D06; D06B; D06B11/00; D06B11/0076; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1705
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |