US3391302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning circuit for headlamps that remain connected after the ignition circuit is disconnected
Assignee: HERBERT B WEINGARDEN
•
Filing: 1967-02-08
•
Granted: 1968-07-02
•
Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Weingarden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
B; B60; B60Q; B60Q9/00; B60Q9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124782A
Cited
US1909072A
Cited
US3040207A
Cited
US3157870A
Cited
US3214730A
Cited
US3283299A
Cited
US3325783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |