USD213371S - Teaching aid for use with data processing cards - Google Patents

Teaching aid for use with data processing cards Download PDF

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Publication number
USD213371S
USD213371S US D213371 S USD213371 S US D213371S
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US
United States
Prior art keywords
data processing
teaching aid
processing cards
cards
teaching
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Charles C. Worstell
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United States Patent 0 "i e 213,371
Patented Feb. 25, 1969 TEACHING AID FOR USE WITH DATA PROCESSING CARDS Charles C. Worstell, 356 Burley Drive, Pocatello, Idaho 83201 Filed Feb. 21, 1968, Ser. No. 10,663
Term of patent 14 years US. Cl. D25-1 Int. Cl. D19--08 FIG. 1 is a rear perspective view of a teaching aid for References Cited use:1 with data processing cards, showing my new design; UNITED STATES PATENTS an FIG. 2, a front perspective view, with a portion broken 201732 7/1965 away to show the appearance therebeneath. 207465 4/1967 Dudley lin'giggreisgirsttsiazelatures of the design reside in the full MELVIN B. FEIFER Primary Examiner Iclaim:
The ornamental design for a teaching aid for use with

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