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US2778075A
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Centrifugal casting apparatus
Assignee: Individual
•
Filing: 1955-04-19
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Granted: 1957-01-22
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Karl H Huppert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:30
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06; B22D13/063; A; A61; A61C; A61C13/00; A61C13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1502435A
Cited
US1805168A
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US2009489A
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US2104380A
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US2287509A
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US2462259A
Cited
US2637079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |