US2964820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting jig
Assignee: STRUCTURAL CLAY PRODUCTS RES F
•
Filing: 1957-07-10
•
Granted: 1960-12-20
•
Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Irwin D Olson
- 👤 Robert B Taylor
- 👤 Jr Clarence B Monk
- 👤 John P Wogulis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:38
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/04; B28B11/041; Y; Y10; Y10S; Y10S425/00; Y10S425/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US720718A
Cited
US813439A
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US875983A
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US1142341A
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US1149637A
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US1634047A
Cited
US2203694A
Cited
US2668999A
Cited
US2671941A
Cited
US2741821A
Cited
US2764798A
Cited
US2781554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |