Patent US2662764A successfully refreshed from Google Patents.
US2662764A
Expired / Lapsed
US
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Oscillatory, direct-fired, stackloaded melting furnace
Assignee: Reda Pump Co
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Filing: 1951-04-18
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Granted: 1953-12-15
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arutunoff Armais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/04; F27B3/045; F27B3/06; F27B3/065; F27D; F27D3/00; F27D2003/0085; F27D2003/0089; F27D2003/009; F27D3/15; F27D3/1509; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |