Master unit for an intercommunication system
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FIG. 1 is a front and right side perspective view of a master unit for an intercommunication system showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a rear elevational view thereof; and
FIG. 7 is a bottom plan view thereof.
|D274518||July 3, 1984||Doodson|
|D291888||September 15, 1987||Fong et al.|
|D292401||October 20, 1987||Lee et al.|
|D292706||November 10, 1987||Fischer|
|D300631||April 11, 1989||Culbertson|
|D301037||May 9, 1989||Matsuda|
- CQ The Radio Amateur's Journal; Nov. 1986; p. 33; Sony AIR-8.