Patent US3666537A successfully refreshed from Google Patents.
US3666537A
Expired / Lapsed
US
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Method of continuously teeming and solidifying virgin fluid metals
Assignee: ELWIN A ANDREWS
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Filing: 1969-05-01
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Granted: 1972-05-30
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Expires: 1989-05-01
Abstract
Abstract VIRGIN FLUID METAL IS CONTINUOUSLY TEEMED AND SOLIDIFIED FROM THE INSIDE OUTWARDLY BY ACCRETION UPON A CONTINUOUSLY MOVING SOLID BODY OF THE SAME METAL.
Inventors
- 👤 Sylvester V Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:45
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; B; B22; B22D; B22D11/00; B22D11/01
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |