US3384476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy steel and method of making same
Assignee: Sandvik AB
•
Filing: 1964-11-19
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Granted: 1968-05-21
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Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Egnell Lennart Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:09
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; C; C21; C21D; C21D8/00; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/58
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |