US2660414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic vibrator apparatus for treating molten metal
Assignee: Selas Corp of America
•
Filing: 1949-12-16
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Granted: 1953-11-24
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Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Davidlee Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
F; F27; F27D; F27D27/00; C; C22; C22B; C22B4/00; F27D3/00; F27D2003/0034; F27D2003/0039; F27D3/12; F27D2003/125; F27D2003/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1138457A
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US1908104A
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US1785757A
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US2356021A
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US2309033A
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US2279228A
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US2333041A
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US2439443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |