US2963865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic extrusion apparatus
Assignee: Ethyl Corp
•
Filing: 1959-07-07
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Granted: 1960-12-13
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Expires: 1979-07-07
Abstract
No abstract record available.
Inventors
- 👤 Henry A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:19
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/26; A; A21; A21C; A21C11/00; A21C11/16; B21; B21C; B21C23/00; B21C23/21; B28; B28B; B28B3/00; B28B3/20; B28B3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB382244A
Cited
US1982711A
Cited
US2454893A
Cited
US2511883A
Cited
US2585297A
Cited
US2774436A
Cited
US2912827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |