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US4021910B1
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US4021910B1 - - Google Patents
Assignee: Howmet Corp
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Filing: 1976-04-14
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Granted: 1984-07-10
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Expires: 1996-04-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:03
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10; B; B22; B22D; B22D31/00; B22D31/002; B22D31/005; Y; Y10; Y10S; Y10S29/00; Y10S29/036; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49972; Y10T29/49973; Y10T29/4998; Y10T29/49988; Y10T29/49989; Y10T29/49993
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |