Patent US2820753A successfully refreshed from Google Patents.
US2820753A
Expired / Lapsed
US
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Nuclear reactor
Assignee: Individual
•
Filing: 1949-06-23
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Granted: 1958-01-21
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Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert I Miller
- 👤 Smith Ralph Carlisle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:45
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/04; G21C1/24; G21C1/26; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/904; Y10S376/905
Claims Analysis
Total Claims: 0
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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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |