US2850673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic headlight dimming system
Assignee: Unisys Corp
•
Filing: 1954-10-14
•
Granted: 1958-09-02
•
Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Beckman Carl
- 👤 Jr David A Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:10
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/14; B60Q1/1415; B60Q1/1423; B60Q2300/00; B60Q2300/40; B60Q2300/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2476389A
Cited
US2679616A
Cited
US2558969A
Cited
US2560748A
Cited
US2767347A
Cited
US2632040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |