USD237879S - Magnetism and induction educational board - Google Patents
Magnetism and induction educational board Download PDFInfo
- Publication number
- USD237879S USD237879S US D237879 S USD237879 S US D237879S
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- US
- United States
- Prior art keywords
- magnetism
- induction
- educational board
- educational
- board
- Prior art date
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- 230000001939 inductive effect Effects 0.000 title description 5
- 230000005389 magnetism Effects 0.000 title description 5
- 230000005611 electricity Effects 0.000 description 1
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Description
United States Patent 237,819
. Patented Dec. 2, 1975 MAGNETISM AND INDUCTION EDUCATIONAL BOARD Charles G. Valentine, Stamford, Conn., assignor t0 Xerox Corporation, Stamford, Conn.
Filed Apr. 19, 1973, Ser. No. 352,794
Term of patent 14 years Int. Cl. Dl907 U.S. Cl. D19-62 FIG. 1
Des. 237,879
Page 2 of 2 FIG. 2
. FIG. 1 is a left perspective view of a magnetism and induction educational board showing my new design; and
References Cited UNITED STATES PATENTS FIG. 2 is a right perspective view thereof.
The rear of the magnetism and induction educational 11225531 112M972 et D25 1 R bOElld IlOt shown is plain and unornamented, 28261628 3/1958 Kruse 35 19 A I claim:
OTHER REFERENCES GE Educational Projects Catalog, 1962, item 2, electricity lab, photo at bottom of page.
The ornamental design of a magnetism and induction educational board. substantially as shown and described.
JOEL STEARMAN, Primary Examiner C. A. RADEMAKER, Assistant Examiner
Family
ID=
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