US3402307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motors and generators employing superconductors
Assignee: RCA Corp
•
Filing: 1965-03-23
•
Granted: 1968-09-17
•
Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Pearl Judea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
H; H02; H02K; H02K55/00; H01; H01F; H01F6/00; H01F6/005; Y; Y02; Y02E; Y02E40/00; Y02E40/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3336489A
Cited
US3277322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |