US3446930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-field inductor for heating electrically conducting workpieces
Assignee: SMS Elotherm GmbH
•
Filing: 1966-12-20
•
Granted: 1969-05-27
•
Expires: 1986-12-20
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Seulen
- 👤 Herbert Geisel
- 👤 Ernst Stangl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:07
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |