Patent US2636232A successfully refreshed from Google Patents.
US2636232A
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US
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Centrifugal casting machine
Assignee: Individual
•
Filing: 1947-06-02
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Granted: 1953-04-28
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Jr John Frei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:59
CPC Classifications
B; B22; B22D; B22D13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US950106A
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US1498562A
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US1562029A
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US1534952A
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US2086483A
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US2235443A
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US2304067A
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US2348322A
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US2472246A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |