Patent US3564087A successfully refreshed from Google Patents.
US3564087A
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Extrusion of plastic tubing with controlled variable diameter
Assignee: Continental Can Co Inc
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Filing: 1968-06-07
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Granted: 1971-02-16
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Expires: 1988-06-07
Abstract
Abstract THIS DISCLOSURE RELATES TO THE EXTRUSION OF PLASTIC TUBING HAVING LOCALIZED VARIATIONS IN DIAMETER, DUE TO THE INTRODUCTION OF VARIABLE FLUID PRESSURE INSIDE THE TUBING, AND THE SUBSEQUENT BLOW-MOLDING OF THE LOCALIZED VARIABLE DIAMETER EXTRUSION TO FORM A BOTTLE HAVING INTEGRAL HOLLOW HANDLES WHICH ARE FREE OF FLASH EXTERIORLY OF A MOLD HANDLE PARTING LINE.
Inventors
- 👤 Herbert S Ruekberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:02
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/18; B29C49/02; B29C49/04; B29C49/0411; B29C49/04112; B29C49/42; B29C49/48; B29C49/482; B29C49/08; B29C49/16; B29C49/1602; B29L; B29L2031/00; B29L2031/46; B29L2031/463
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |