Switch unit for use with a piano keyboard
US D232865 S
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United States Patent 0 Des. 232,865 Patented Sept. 17, 1974 SWITCH UNIT FOR USE WITH A PIANO KEYBOARD Brian Claude Jarvis, London, England, assignor to Moviecol Enterprises Limited, London, England Filed June 5, 1972, Ser. No. 260,032
Claims priority, application Great Britain Dec. 21, 1971 Term of patent 14 years Int. Cl. D17-01 U.S. Cl. D56-9 FIG .4.
FIG. 1 is a fragmentary left end, front and bottom perspective view of a switch unit for use with a piano keyboard, showing my new design, the portion between the ninth and nineteenth key from the left as shown in 29,497 FIG. 2 being broken away and omitted for convenience 1239686 in illustration; 12 FIG. 2 is a front elevational view; 3,272,053 FIG. 3 is a top plan view; FIG. 4 1s a rear elevat1ona1 view, 761,127
FIG. 5 is a bottom plan view;
FIG. 6 is a left end elevational view; and
FIG. 7 is a right end elevational view thereof.
The ornamental design for a switch unit for use with a piano keyboard, as shown and described.
References Cited UNITED STATES PATENTS 10/1898 Fletcher D56-9 11/1940 Stephens D569X 12/1924 Suarez 84-423 9/1966 Haviland 84-443 FOREIGN PATENTS 11/1956 Great Britain 84Dig. 015
JOEL STEARMAN, Primary Examiner W. M. HENRY, Assistant Examiner