US2958311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soot blower access and sealing means
Assignee: Babcock and Wilcox Co
•
Filing: 1954-06-25
•
Granted: 1960-11-01
•
Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 John C Singleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:12
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/16; F28G15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2804032A
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US2386193A
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US2692642A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |