US3553645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable message traffic sign
Assignee: Individual
•
Filing: 1968-04-04
•
Granted: 1971-01-05
•
Expires: 1988-04-04
Abstract
Abstract THE FACE OF THE SIGN IS PROVIDED WITH LOUVERS ON WHICH A PERMANENT BLACK-ON-WHITE MESSAGE IS IMPOSED. UPON OPENING OF THE LOUVERS A LIGHT BULB MATRIX IS EXPOSED TO VIEW SO AS TO DISPLAY A TEMPORARY MESSAGE. THE TEMPORARY MESSAGE CAN BE CHANGED BY CHANGING THE LIGHTED ARRAY OF THE LIGHT BULBS.
Inventors
- 👤 William P Finkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:08
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/02; G09F11/025; G09F13/00; G09F13/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |