US3207669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems for nuclear reactors
Assignee: Individual
•
Filing: 1961-06-26
•
Granted: 1965-09-21
•
Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Fawcett Sydney
- 👤 Barnes Hale
- 👤 Campbell Ronald Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:50
CPC Classifications
G; G21; G21D; G21D3/00; G21D3/08; G21D3/10; G21D3/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2781308A
Cited
GB823429A
Cited
US2931763A
Cited
US2973458A
Cited
US3079315A
Cited
US3087884A
Cited
US3088903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |