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Patent US2890487A successfully refreshed from Google Patents.
US2890487A
Expired / Lapsed
US
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Spool casting die and core structure
Assignee: Coats and Clark Inc
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Filing: 1956-04-03
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Granted: 1959-06-16
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Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Louis H Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:06
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/48; B29C33/485; B29C45/00; B29C45/17; B29C45/26; B29L; B29L2031/00; B29L2031/704; Y; Y10; Y10S; Y10S425/00; Y10S425/034
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) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |