Patent US3018885A successfully refreshed from Google Patents.
US3018885A
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Extrusion and stretch-straightening apparatus and method
Assignee: Alcoa Corp
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Filing: 1958-05-02
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Granted: 1962-01-30
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Leonard H Trautman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:01
CPC Classifications
B; B21; B21C; B21C35/00; B21C35/02; B21C35/03; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2720310A
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US2715431A
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Cited
US2858017A
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US2893552A
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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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |