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US2956757A
Expired / Lapsed
US
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Core chuck
Assignee: Union Carbide Corp
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Filing: 1957-02-12
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Granted: 1960-10-18
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Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Limbach Anthony Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:57
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/30; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1074; Y10T279/1079
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |