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US3492559A
Expired / Lapsed
US
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Warning lamp circuits for use in battery charging systems
Assignee: ZF International UK Ltd
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Filing: 1967-09-08
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Granted: 1970-01-27
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Expires: 1987-09-08
Abstract
Abstract A warning lamp circuit for a battery charging system includes means operable in use to illuminate a warning lamp until a generator in the battery charging system produces an output. Further means operate the same warning lamp if the output voltage of the generator should rise above a predetermined value, to give a warning, for example, that the voltage regulator is faulty.
Inventors
- 👤 Paul Anthony Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:15
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/60; H02J7/64; H02J7/80; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3231811A
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US3210727A
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US3217311A
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US3336519A
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US3417310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |