US2583265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grate fired fluid heating unit
Assignee: Babcock and Wilcox Co
•
Filing: 1948-03-06
•
Granted: 1952-01-22
•
Expires: 1968-03-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Huston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:59
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/22; F22B37/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1456649A
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US1456650A
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GB500882A
Cited
US2159557A
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US2250536A
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US2333644A
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US2333078A
Cited
US2412568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |