Patent US2778076A successfully refreshed from Google Patents.
US2778076A
Expired / Lapsed
US
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Means for tempering foundry sand
Assignee: Individual
•
Filing: 1952-01-14
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Granted: 1957-01-22
•
Expires: 1972-01-14
Abstract
No abstract record available.
Inventors
- 👤 Millard J Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:08
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/10; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE483371C
Cited
US1714830A
Cited
GB336482A
Cited
US2095385A
Cited
US2273126A
Cited
US2567472A
Cited
US2649630A
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 |