US3822335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cast guide for folding flexible sheets
Assignee: Individual
•
Filing: 1972-10-18
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Granted: 1974-07-02
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Expires: 1992-10-18
Abstract
Abstract THE INVENTION RELATES TO A METHOD FOR PRODUCING A GUIDING DEVICE FOR FLEXIBLE MATERIALS IN WHICH AN ELEMENT, REPRESENTING THE ACTUAL GUIDE PASSAGE TO BE PRODUCED, IS MADE WITH THE AID OF A MALLEABLE MATERIAL; THE ELEMENT IS POSITIONED IN A MOULD WHICH HAS THE GENERAL SHAPE OF THE OUTER CONTOUR OF THE DEVICE TO BE PRODUCED; A RESIN IS CAST INSIDE THIS MOULD AND ONTO THE ELEMENT, AND THE MALLEABLE MATERIAL CONSTITUTING THE INNER ELEMENT IS THEN ELIMINATED WITH THE ADI OF AN AGENT WHICH HAS NO ACTION ON THE RESIN.
Inventors
- 👤 E Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:30
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/52; B29C53/00; B29C53/02; B29C53/04
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |