US3689343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for continuous manufacture of glass fiber reinforced modules of synthetic resin
Assignee: Individual
•
Filing: 1969-08-01
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Granted: 1972-09-05
•
Expires: 1989-08-01
Abstract
Abstract THIS INVENTION RELATES TO A METHOD AND APPARATUS FOR THE CONTINUOUS MANUFACTURE OF MODULAR ELEMENTS OF ANY DESIRED CROSS-SECTIONAL AREA WITH OR WITHOUT A FILLER CORE ELEMENT FROM A LONGITUDINALLY ADVANCING FIBROUS REINFORCED MATERIAL TO WHICH MAY BE ALSO ADDED RUNNING LENGTHS OF STRENGTHENING FIBERS WITH ALL OF THE ELEMENTS BEING ASSEMBLED ON A LONGITUDINALLY TRAVELING SYNTHETIC RESIN COATED WEB WHICH IS INTRODUCED INTO A FORMING DIE AND EXTRUDED THEREFROM AS AN INTEGRATED, RIGID PRODUCT.
Inventors
- 👤 Lothar Elsner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/52
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 |