US3544911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shift cycle generator for a traffic control unit
Assignee: LFE Corp
•
Filing: 1968-11-20
•
Granted: 1970-12-01
•
Expires: 1988-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Duvivier
- 👤 Ludwig R Pallat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2466044A
Cited
US2469155A
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US3059175A
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US3257642A
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US3112451A
Cited
US3149306A
Cited
US3316503A
Cited
US3354410A
Cited
US3299401A
Cited
US3482171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |