Patent US3392438A successfully refreshed from Google Patents.
US3392438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of closing ends of protective tubes for nuclear reactor fuel elements
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1965-03-30
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Granted: 1968-07-16
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Coulter Robert Smith
- 👤 Oldfield William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:42
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/10; G21C3/16; G21C3/17; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2924877A
Cited
FR1080000A
Cited
US2776473A
Cited
GB873370A
Cited
US3245140A
Cited
US3141227A
Cited
US3118819A
Cited
US3245599A
Cited
US3189101A
Cited
US3247591A
Cited
US3145465A
Cited
US3180804A
Cited
US3268411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |