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US3469121A
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US
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Superconductive power apparatus
Assignee: STUART H SMITH JR
•
Filing: 1964-10-21
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Granted: 1969-09-23
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Stuart H Smith Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
H; H02; H02K; H02K55/00; Y; Y02; Y02E; Y02E40/00; Y02E40/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3277322A
Cited
US3292021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |