US2696378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heating steel slugs for forging or extrusion
Assignee: United States Steel Corp
•
Filing: 1951-08-13
•
Granted: 1954-12-07
•
Expires: 1971-08-13
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Krischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0081; F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2461; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4533; Y10T29/4544
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1382002A
Cited
US1657580A
Cited
US1926770A
Cited
US1919136A
Cited
DE692253C
Cited
US2156008A
Cited
US2372478A
Cited
US2489459A
Cited
US2464163A
Cited
US2480516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |