Patent US3501589A successfully refreshed from Google Patents.
US3501589A
Expired / Lapsed
US
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Regulated power supply
Assignee: Zenith Electronics LLC
•
Filing: 1966-07-25
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Granted: 1970-03-17
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Stanley Bart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:22
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18; H04N3/185; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2948776A
Cited
US3072741A
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US3217236A
Cited
US3202865A
Cited
US3346763A
Cited
US3395311A
Cited
US3350599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |