US3679511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible pilfer proof closure construction for bags
Assignee: Individual
•
Filing: 1970-02-18
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Granted: 1972-07-25
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Expires: 1990-02-18
Abstract
Abstract Closure device for bags, pouches, and other articles, consisting of two outer and one inner interengaging webs of resilient, flexible material, said webs having ribs and grooves therein shaped complementarily to interlock with each other, the two outer webs having end portions which are brought together and merged with the inner web into a heat sealed bead, with each web having lines of weakness formed therein in close proximity to the bead whereby said web can be torn open to provide access to its interlocking elements and said bead can also be readily severed to form separate closure tubes.
Inventors
- 👤 Steven Ausnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
B; B29; B29D; B29D5/00; B29D5/10; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |