US3489645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of creating a controlled nuclear fusion reaction
Assignee: Calspan Corp
•
Filing: 1967-03-10
•
Granted: 1970-01-13
•
Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 John W Daiber
- 👤 Charles E Wittliff
- 👤 Abraham Hertzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
G; G21; G21B; G21B1/00; G21B1/11; G21B1/23; Y; Y02; Y02E; Y02E30/00; Y02E30/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3094474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |