US3478256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor potentiometer
Assignee: Yokogawa Electric Corp
•
Filing: 1967-10-18
•
Granted: 1969-11-11
•
Expires: 1987-10-18
Abstract
No abstract record available.
Inventors
- 👤 Miyaji Tomota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:43
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2274735A
Cited
US2548790A
Cited
US3044013A
Cited
US3121839A
Cited
US3327199A
Cited
US3350623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |