Patent US6045565A successfully refreshed from Google Patents.
US2913763A
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US
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Assembly for supporting center cores in annular supply passageways for circumferential extrusion dies and the like
Assignee: Dow Chemical Co
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Filing: 1956-10-22
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Granted: 1959-11-24
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 Murrey O Longstreth
- 👤 James E Tollar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371576A
Cited
US2177633A
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US2253627A
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US2363261A
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US2428315A
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US2817113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |