US2987458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisted ribbon fuel element
Assignee: Individual
•
Filing: 1954-12-14
•
Granted: 1961-06-06
•
Expires: 1974-12-14
Abstract
No abstract record available.
Inventors
- 👤 Calvin R Breden
- 👤 Arthur B Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:40
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/30; G21C1/00; G21C1/04; G21C1/06; G21C1/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901; Y10S376/903; Y10S376/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |