US2858405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
60-cycle induction furnace
Assignee: Westinghouse Electric Corp
•
Filing: 1956-12-24
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Granted: 1958-10-28
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Laurence B Kimbrough
- 👤 Edward J Carbo
- 👤 Karl F Eger
- 👤 Peter G Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:24
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/06
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |