Patent US2657651A successfully refreshed from Google Patents.
US2657651A
Expired / Lapsed
US
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Hanger construction for anchor tiles of refractory arches
Assignee: Babcock and Wilcox Co
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Filing: 1950-12-20
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Granted: 1953-11-03
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Expires: 1970-12-20
Abstract
No abstract record available.
Inventors
- 👤 Robert H Forsyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:38
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/141; F27D1/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417957A
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US460213A
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US950978A
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GB213612A
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GB353682A
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GB352820A
Cited
US2011701A
Cited
US1978077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |