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US3222719A
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Extrusion apparatus
Assignee: Phillips Petroleum Co
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Filing: 1962-07-27
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Granted: 1965-12-14
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Paul H Wagner
- 👤 Edward J Kosinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:10
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2436201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |