US2636723A
Expired / Lapsed
US
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High-temperature melting apparatus
Assignee: Babcock and Wilcox Co
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Filing: 1949-01-29
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Granted: 1953-04-28
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Expires: 1969-01-29
Abstract
No abstract record available.
Inventors
- 👤 Harter Isaac
- 👤 Jr Charles L Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:07
CPC Classifications
C; C04; C04B; C04B32/00; C04B32/005; C03; C03B; C03B3/00; C03B3/02; C03B3/023; C03B37/00; C03B37/08; C03B5/00; C03B5/06; C03B5/16; C03B5/235; C03B5/237; F; F27; F27B; F27B1/00; F27B3/00; F27B7/00; F27B7/20; F27B7/2083; F27B19/00; F27B19/04; Y; Y02; Y02P; Y02P40/00; Y02P40/50
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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |