US3483346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductor for surface hardening flanged elongate workpieces
Assignee: SMS Elotherm GmbH
•
Filing: 1968-04-01
•
Granted: 1969-12-09
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Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Seulen
- 👤 Friedhelm Reinke
- 👤 Karl W Frisch
- 👤 Fritz Oertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C21D1/10; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2293534A
Cited
US2632079A
Cited
US2758187A
Cited
US2797288A
Cited
US3188440A
Cited
US3337200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |