US2954121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of spirally formed article
Assignee: Individual
•
Filing: 1955-03-14
•
Granted: 1960-09-27
•
Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Donald O Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:29
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR954729A
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DE224576C
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US1902975A
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US2108004A
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US2154611A
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US2217194A
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FR881486A
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US2388558A
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US2422794A
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US2559523A
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US2461640A
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US2680902A
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US2707820A
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US2865502A
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US2751076A
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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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |