US3507748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and safety device for nuclear reactors
Assignee: RICHARD A FARMER
•
Filing: 1967-06-07
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Granted: 1970-04-21
•
Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Henri Fenech
- 👤 Richard A Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:27
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/02; G21C9/027; G21C17/00; G21C17/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
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) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |