Patent US3520352A successfully refreshed from Google Patents.
US3520352A
Expired / Lapsed
US
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Continuous casting mold having insulated portions
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1967-10-19
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Granted: 1970-07-14
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Expires: 1987-10-19
Abstract
No abstract record available.
Inventors
- 👤 Martin Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:25
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1828335A
Cited
US2672665A
Cited
FR1056274A
Cited
DE1213090B
Cited
GB927172A
Cited
US3206809A
Cited
US3343594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |