Patent US3423665A successfully refreshed from Google Patents.
US3423665A
Expired / Lapsed
US
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Electronic power supplies with inverters and regulators
Assignee: LAMBDA ELECTRONICS CORP
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Filing: 1965-10-23
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Granted: 1969-01-21
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Sol Greenberg
- 👤 George A Gautherin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:44
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/516; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/305; H02M3/315
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3119058A
Cited
US3281652A
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US3321697A
Cited
US3263152A
Cited
US3303406A
Cited
US3305794A
Cited
US3330933A
Cited
US3319147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |