US3494828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactor direct pressure suppression containment
Assignee: Stone and Webster Engineering Corp
•
Filing: 1967-12-18
•
Granted: 1970-02-10
•
Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Charles T Chave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:58
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/004; G21C9/012; G21C15/00; G21C15/18; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3115450A
Cited
US3158546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |