US3470408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable reluctance electric generators with stacked permanent magnet discs
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1967-09-18
•
Granted: 1969-09-30
•
Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Wilfrid B Lewis
- 👤 William A Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:20
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/14; H02K21/145; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2760093A
Cited
US2797346A
Cited
US3293460A
Cited
GB933925A
Cited
US3237036A
Cited
US3248584A
Cited
GB972364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |