US3214730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headlight reminder circuit
Assignee: Motors Liquidation Co
•
Filing: 1962-09-25
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Granted: 1965-10-26
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Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Prewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
B; B60; B60Q; B60Q9/00; B60Q9/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
IN A MOTOR VEHCILE ELECTRICAL SYSTEM INCLUDING A SOURCE OF POWER, A FIRST SERIES CIRCUIT INCLUDING AN IGNITION SWITCH, CONDITION RESPONSIVE SWITCHING MEANS AND INDICATING MEANS FOR INDICATING THE OCCURRENCE OF SAID CONDITION WHEN SAID IGNITION SWITCH IS CLOSED, A SECOND SERIES CIRCUIT INCLUDING AN EXTERNAL VEHICLE LAMP LOAD AND A LAMP LOAD SWITCH, THE IMPROVEMENT COMPRISING CIRCUIT MENS INTERCONNECTING SAID FIRST AND SECOND SERIES CIRCUIT, SAID CIRCUIT MEANS ALLOWING CURRENT FLOW BETWEEN SAID SOURCE AND SAID INDICATING MEANS BY WAY OF SAID HEADLAMP SWITCH AND PREVENTING CURRENT FLOW BETWEEN SAID SOURCE AND SAID EXTERNAL LAMP LOAD BY WAY OF SAID IGNITION SWITCH WHEREBY SAID INDICATING MEANS PERFORMS THE ADDITIONAL FUNCTION OF INDICATING THE CONCURRENT CLOSURE OF SAID EXTERNAL LAMP LOAD SWITCH AND SAID CONDITION RESPONSIVE SWITCHING MEANS.
References Cited (Backward Citations)
US2799843A
Cited
US3077576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |