US3570051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for biaxially stretching foil sheets or webs
Assignee: Bayer AG
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Filing: 1968-07-03
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Granted: 1971-03-16
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Expires: 1988-07-03
Abstract
Abstract AN APPARATUS FOR BIAXIALLY STRETCHING CONTINUOUS WEB MATERIALS IS DISCLOSED WHEREIN THERE IS EMPLOYED A PLURALITY OF HOLDING DEVICES HAVING MEANS TO SIMULTANEOUSLY AND INDEPENDENTLY ADJUST THE WIDTH OF GAPS IN THE HOLDING DEVICES NECESSARY TO PERMIT PASSAGE THEREBETWEEN OF BOTH A MARGINALLY REINFORCED PORTION AND A FOIL PORTION OF THE WEB MATERIAL.
Inventors
- 👤 Hieronymus Zygan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:55
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/20; B29C55/10; B29C55/12; B29C55/16; B29C55/165
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |