US2479610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting machine
Assignee: Individual
•
Filing: 1945-01-20
•
Granted: 1949-08-23
•
Expires: 1965-01-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John Frei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:09
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1735648A
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US1767035A
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US1751766A
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US1767036A
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US1805168A
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US1904214A
Cited
US2086483A
Cited
US2223902A
Cited
US2140204A
Cited
US2209381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |