US2622549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure means for chamber wall opening with fluid pressure gas escape prevention means
Assignee: Babcock and Wilcox Co
•
Filing: 1946-05-23
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Granted: 1952-12-23
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Expires: 1966-05-23
Abstract
No abstract record available.
Inventors
- 👤 Fletcher James
- 👤 Benjamin H Miller
- 👤 Eugene H Selnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:14
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; F23C3/008; B; B29; B29D; B29D99/00; B29D99/0053; B29L; B29L2031/00; B29L2031/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US139693A
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US444631A
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US1533398A
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US805654A
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US805295A
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US1326459A
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US1488042A
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US1698998A
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US1856138A
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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) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |