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US3390564A
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US
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Method of forming metal elements
Assignee: Pechiney SA
•
Filing: 1965-05-25
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Granted: 1968-07-02
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert P Syre
- 👤 Jean L Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/08; B21B1/0805; B21B15/00; B21B3/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |