Patent US3120139A successfully refreshed from Google Patents.
US3120139A
Expired / Lapsed
US
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Cooled mandrel for continuous tube rolling mills
Assignee: Innocenti Societa General per lIndustria Metallurgica e Meccanica
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Filing: 1961-02-01
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Granted: 1964-02-04
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Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 Dvorak Emilio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:00
CPC Classifications
B; B21; B21B; B21B25/00; B21B25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445139A
Cited
US1819257A
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US2182910A
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US2167424A
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US2385140A
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US2447249A
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US2866545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |