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Patent US2984173A successfully refreshed from Google Patents.
US2984173A
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Extrusion die for briquetting machine
Assignee: Sumner Iron Works Inc
•
Filing: 1958-05-15
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Granted: 1961-05-16
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 James B Roche
- 👤 William C Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/26; B30B11/265; B30B11/224; Y; Y10; Y10S; Y10S100/00; Y10S100/903; Y10S100/906; Y10S100/909; Y10S425/00; Y10S425/23
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |