USD178150S - Arithmetic teaching aid - Google Patents
Arithmetic teaching aid Download PDFInfo
- Publication number
- USD178150S USD178150S US D178150 S USD178150 S US D178150S
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- US
- United States
- Prior art keywords
- teaching aid
- arithmetic teaching
- arithmetic
- view
- aid
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Patented June 26, 1956 ARlTHMETlC TEACHING AID Arden K. Ruddell, San Jose, and Gerald W. Brown, Los Angeles, Calif.
Application February 28, 1955, Serial No. 34,729
Term of patent 14 years (Cl. D25-1) lfll l .fFZz'gJ- Fig. 1 is a front perspective view of an arithmetic References Cited in the file of this patent teaching aid showing our new design. UNITED STATES PATENTS Flg. 2 1s a rear perspectlve view thereof, the central 3 1876 portion representing a surface of felt or flocking. 9303 Kendall May 1897 Fig. 3 is an end elevational view thereof. 27461 Mcconnenogue 1933 The legible matter shown in broken lines in the draw- 90769 Kamen Sept ing is for illustrative purposes only.
We claim:
The ornamental design for an arithmetic teaching aid, substantially as shown and described.
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