US3393526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic heat pump including magnetic means for moving a normal zone along a superconductive rod
Assignee: RCA Corp
•
Filing: 1966-06-29
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Granted: 1968-07-23
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Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 Pearl Judea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:13
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/005; F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25; F25B; F25B21/00; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F25B2321/00; F25B2321/002; F25B2321/0022; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3121265A
Cited
US3108444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |