US2464727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency inductor heattreating apparatus
Assignee: Sunbeam Corp
•
Filing: 1944-06-07
•
Granted: 1949-03-15
•
Expires: 1964-06-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Storm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:59
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1378187A
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US1779604A
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GB260026A
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US1687656A
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US1747934A
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US1987458A
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GB472198A
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US2338496A
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US2181899A
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US2359087A
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US2364623A
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US2353130A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |