Title:
VARIABLE MESSAGE DISPLAYS
United States Patent 3493957
US Patent References:
TRAVELING SIGN CONTROLLED BY LOGIC CIRCUITRY AND PROVIDING A PLURALITY OF VISUAL DISPLAY EFFECTS
- - 3432846
Electric sign system
- - 2123459
Electrical circuits employing gaseous discharge tubes
- - 2649502
Optical apparatus
- - 3384888
Information display system
- - 3387269
TRAVELING SIGN CONTROLLED BY LOGIC CIRCUITRY AND PROVIDING A PLURALITY OF VISUAL DISPLAY EFFECTS
- - 3432846
Electric sign system
- - 2123459
Electrical circuits employing gaseous discharge tubes
- - 2649502
Optical apparatus
- - 3384888
Information display system
- - 3387269
Inventors:
Brooks, William
Publication Date:
02/03/1970
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Export Citation:
Assignee:
William, Brooks
Primary Class:
International Classes:
G09G3/04; G09G3/20; G11C19/06; G11C19/28; G11C19/00; H05B39/00; G09B13/00
US Patent References:
| 3389389 | Moving message sign |