US3588957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding machine
Assignee: Lester Engineering Co
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Filing: 1968-12-05
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Granted: 1971-06-29
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Expires: 1988-12-05
Abstract
Abstract AN INJECTION MOLDING MACHINE USING A LARGE CLAMP PISTON-CYLINDER ASSEMBLY CONNECTED TO THE MOVABLE PLATEN THROUGH A SOLID COLUMN FORMED BY TELESCOPING CYLINDER INTERCONNECTED BY SHEAR BLOCKS WHEN THE MOVABLE PLATEN HAS BEEN CLOSED TO OBTAN THE DESIRED CLAMPING TONNAGE.
Inventors
- 👤 William H Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/64; B29C45/67; B29C45/6707; B29C45/6714
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |