US2489322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner for centrifugal casting molds
Assignee: Hastings Manufacturing Co
•
Filing: 1946-08-28
•
Granted: 1949-11-29
•
Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Olsen
- 👤 Rudolph F Flora
- 👤 Clifford J Lonnee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:10
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/101; B22D13/102; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1249101A
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US1743932A
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US2040348A
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US2239530A
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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) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |