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US2823289A
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US
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Induction heating method and apparatus
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1955-02-14
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Granted: 1958-02-11
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Expires: 1975-02-14
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:42
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181274A
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US2513778A
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US2672550A
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US2687464A
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US2669647A
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US2759087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |