Patent US3579730A successfully refreshed from Google Patents.
US3579730A
Expired / Lapsed
US
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Apparatus for making a web having integral interlocking rib and groove portions
Assignee: Individual
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Filing: 1968-02-02
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Granted: 1971-05-25
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Expires: 1988-02-02
Abstract
Abstract AN APPARATUS FOR MAKING RECLOSABLE BAGS HAVING A FIRST EXTRUDER CHANNEL FOR EXTRUDING A FIRST THERMOPLASTIC SUBSTANCE AND HAVING A SERIES OF MINOR EXRUSION CHANNELS FOR EXTRUDING A SECOND THERMOPLASTIC SUBSTANCE SUCH THAT INTERLOCKING RIB AND GROVE ELEMENTS OF A FLEXIBLE RECLOSABLE CONTAINER MAY BE FORMED SEPARATELY, YET INTEGRALLY WITH THE FILM FORMING THE CLOSURE STRIPS OR WALLS OF THE CONTAINER.
Inventors
- 👤 Steven Ausnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
B; B29; B29D; B29D5/00; B29D5/10; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/12; B29C48/25; B29C48/30; B29C48/32; B29C48/07; B29C48/08; B29L; B29L2005/00
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |