Patent US3561060A successfully refreshed from Google Patents.
US3561060A
Expired / Lapsed
US
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Rotational casting mold
Assignee: Allen Industries Inc
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Filing: 1968-03-08
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Granted: 1971-02-09
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Expires: 1988-03-08
Abstract
Abstract A METHOD AND A MOLD FOR ROTATIONALLY CASTING HOLLOW PLASTIC ARTICLES FORMED WITH AN OPENING FOR CHARGING THE PLASTIC ARTICLES FORMED WITH AN OPENING FOR CHARGING THE PLASTIC INTO THE MOLD AND FOR REMOVING THE FINISHED ARTICLE THEREFROM, AND WHICH OPEINING IS SEALED DURING THE CASTING OPERATION BY A MAGNETICALLY MOUNTED LID, WHICH PREFERABLY ADDITIONALLY INCLUDES A VENT THERETHROUGH AND EVAPORATIVE COOLING MEANS THEREON.
Inventors
- 👤 Frederick J Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:35
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/30; B29C33/32; B29C41/00; B29C41/02; B29C41/04; B29C41/06; B29C33/10
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |