US3271822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbide facing for extrusion dies
Assignee: United Greenfield Corp
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Filing: 1965-01-15
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Granted: 1966-09-13
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Del H Rhino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:55
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/345; B29C48/04; B29C48/06; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
AN EXTRUSION DIE COMPRISING A DIE-BODY HAVING A FORWARDLY PRESENTED FACE AND PROVIDED WITH A PLURALITY OF EXTRUSION PORTS WHICH TERMINATE AT THE FORWARDLY PRESENTED FACE, AND A PLURALLITY OF DISCRETE WAFERS FORMED FROM A DIFFERENT AND SUBSTANTIALLY HARDER MATERIAL THAN THE DIEBODY, THE WAFERS BEING BRAZED TO THE FORWARD FACE AND HAVING EXTRUSION APERTURES WHICH REGISTER WITH THE TERMINAL PORTIONS OF THE EXTRUSION PORTS, WHEREBY EXTRUSION
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |