Patent US3558406A successfully refreshed from Google Patents.
US3558406A
Expired / Lapsed
US
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Bottom seal contour bag manufacture
Assignee: Individual
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Filing: 1967-10-23
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Granted: 1971-01-26
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Expires: 1987-10-23
Abstract
Abstract APPARATUS FOR MANUFACTURING PLASTIC BAGS HAVING A SEALED BOTTOM EDGE IN THE OPERATION OF WHICH A TRANSVERSELY APPLIED LINE OF HEAT SEALING SIMULTANEOUSLY PROVIDES SUCH BOTTOM EDGE WHILE CLEANLY SEVERING EACH BAG FROM THE SUPPLY LENGTH OF PLASTIC. IN PRIOR ART PRACTICE SUCH A LINE OF HEAT SEALING IS AVOIDED TO PREVENT TACKING OF THE PLASTIC TO THE SUPPORTING FEED BELT OF THE APPARATUS WHICH ADVERSELY EFFECTS FEED MOVEMENT OF THE PLASTIC THROUGH THE BAG-MAKING APPARATUS.
Inventors
- 👤 Emanuel Kugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/64; B31B70/642; B31B2155/00; B31B2155/003; B31B2160/00; B31B2160/10; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |