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Patent US2479980A successfully refreshed from Google Patents.
US2479980A
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Induction heating apparatus
Assignee: Induction Heating Corp
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Filing: 1945-05-19
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Granted: 1949-08-23
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Expires: 1965-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert J Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:24
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US402416A
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US1789229A
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US2024906A
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US2144378A
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US2144377A
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US2247979A
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US2201308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |