Title:
THERMAL PRINT HEAD
United States Patent 3478191
US Patent References:
Passive information displays
- - 3323241

Passive information displays
- - 3354565


Inventors:
Johnson, Theodore W.
Kalt, Charles G.
Martin, Jacob H.
Publication Date:
11/11/1969
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Assignee:
SPRAGUE ELECTRIC CO
Primary Class:
347/200
Other Classes:
219/543, 347/203, 347/201
International Classes:
B41J2/335; H05B3/02; H05B11/00; H05B1/00; H05B3/16




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