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US3187155A
Expired / Lapsed
US
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Method of heating annular metallic bodies by electrical induction
Assignee: IHO Holding GmbH and Co KG
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Filing: 1960-10-10
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Granted: 1965-06-01
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Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 Beckert Ernst
- 👤 Volkening Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:40
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US458163A
Cited
US1234280A
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US1987458A
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US2445459A
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US2786970A
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US2975239A
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US3049208A
Cited
US3078396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |