US2798196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power regulating system for resistance furnaces
Assignee: Babcock and Wilcox Co
•
Filing: 1952-08-28
•
Granted: 1957-07-02
•
Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 William T Hage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:06
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/06; H05B3/00; H05B3/0019
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US772096A
Cited
US1566980A
Cited
US1943463A
Cited
US2158135A
Cited
US2306998A
Cited
US2561329A
Cited
US2558094A
Cited
US2624035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |