US3428110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of foundry cores and molds
Assignee: Foseco Fordath AG
•
Filing: 1968-05-27
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Granted: 1969-02-18
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Expires: 1988-05-27
Abstract
No abstract record available.
Inventors
- 👤 James Walker
- 👤 Geoffrey W Westwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/162; B22C1/20; B22C1/22; B22C1/2233; B22C1/2273; B22C9/00; B22C9/12; B22C9/123; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1891; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |