Patent US2958099A successfully refreshed from Google Patents.
US2958099A
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Extrusion die for plastic extruders
Assignee: Dow Chemical Co
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Filing: 1959-01-15
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Granted: 1960-11-01
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Douglas S Chisholm
- 👤 Harold R Bylsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:15
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/03; B29C48/04; Y; Y10; Y10S; Y10S100/00; Y10S100/903; Y10S100/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2186415A
Cited
US2862243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |