US3377158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converter control systems and methods
Assignee: Jones and Laughlin Steel Corp
•
Filing: 1965-04-28
•
Granted: 1968-04-09
•
Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Harry W Meyer
- 👤 Porter W Fergus
- 👤 Melvin M Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3100699A
Cited
US3236630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |