Patent US3682739A successfully refreshed from Google Patents.
US3682739A
Expired / Lapsed
US
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Method of slitting foam rubber products
Assignee: Breveteam SA
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Filing: 1970-04-24
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Granted: 1972-08-08
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Expires: 1990-04-24
Abstract
Abstract A METHOD WHEREIN FOAM MATERIAL OF RUBBER OR PLASTIC IS PROVIDED WITH AT LEAST TWO SERIES OF SLITS EXTENDING IN DIFFERENT DIRECTIONS THROUGH THE MATERIAL AND AT LEAST PARTLY INTERSECTING EACH OTHER.
Inventors
- 👤 Gunter Horst Tesch
- 👤 Johannes J V Colijn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:20
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B26; B26D; B26D3/00; B26D3/006; B26F; B26F1/00; B26F1/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1062; Y10T156/1064; Y10T156/12; Y10T156/1304; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0429; Y10T83/0505; Y10T83/051; Y10T83/343
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |