US2777936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making bimetallic billet
Assignee: Superior Steel Corp
•
Filing: 1954-03-11
•
Granted: 1957-01-15
•
Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Laurence J Berkeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K9/00; B23K9/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US363320A
Cited
US1831343A
Cited
US1867979A
Cited
US2064684A
Cited
AT146461B
Cited
US2102455A
Cited
US2219352A
Cited
US2231014A
Cited
US2288032A
Cited
US2423811A
Cited
US2423810A
Cited
US2421891A
Cited
US2529812A
Cited
US2678987A
Cited
US2684426A
Cited
US2667559A
Cited
US2690493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |