US3465231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformerless converter-inverter
Assignee: Varo Inc
•
Filing: 1967-12-26
•
Granted: 1969-09-02
•
Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/305; H02M3/315; H02M3/02; H02M3/04; H02M3/06; H02M3/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2682002A
Cited
US2843815A
Cited
US2967989A
Cited
US3341765A
Cited
US3337787A
Cited
US3329247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |