Patent US3496820A successfully refreshed from Google Patents.
US3496820A
Expired / Lapsed
US
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Device for cutting of high-polymer sheet formed in a roller mill
Assignee: Semperit AG Holding
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Filing: 1967-12-12
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Granted: 1970-02-24
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Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 Felix Utzmann
- 👤 Albert Rieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:26
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/003; B26D1/00; B26D1/01; B26D1/12; B26D1/25; B26D1/34; B26D1/38; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4699; Y10T83/4702; Y10T83/768; Y10T83/7809; Y10T83/7813; Y10T83/7818; Y10T83/7851; Y10T83/7855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1940106A
Cited
US2940350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |