Patent US3528487A successfully refreshed from Google Patents.
US3528487A
Expired / Lapsed
US
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Continuous casting machine
Assignee: Acme Steel Co
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Filing: 1967-06-05
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Granted: 1970-09-15
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Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 James N Wognum
- 👤 Emil Simich
- 👤 Alvin L Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:27
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/041; B22D11/053; B22D11/0535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE528868A
Cited
US2195809A
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US3075264A
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US3237252A
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US3321008A
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US3388737A
Cited
US3364980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |