Appeal No. 96-2189
Application 07/969,731
color to aid the operator to distinguish a group of control
switches related to one particular function from a group of
control switches related to another function is notoriously
well known in the art.
Matsko teaches that the first switch means for adjusting
selectable parameters are to distinguish from the second
switch means for testing by the physical placement of the
first and second switch means on the panel shown in Figure 5.
This teaching suggests to those skilled in the art the need to
distinguish groups of control switch. As noted above, a well
known way of distinguishing groups of control switches is the
use of color coding of the switches. Those skilled in the art
would have recognized that color may be used as well in the
physical placement of the switches to further enhance the
distinction between the first and second switch means to the
operator. Therefore, we find that it would have been obvious
to those skilled in the art to use well known color coding
such that the first switch means is a first identifiable color
and the second switch means is a second different identifying
color as recited in Appellants' claim 10.
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