Appeal No. 98-1449 Page 5
Application No. 08/297,122
[i]t is well known in any facet of construction that if
there are two or more elements which interfere with each
other or there is an interference fit that some form of
relieving, notching or removal of a portion of one of the
elements would be performed. This is a rather typical
procedure and is "obvious" in the true sense of the word.
The concept has universal application and is just as
relevant to an apparent unsightly suspended ceiling
system as to a basic framing of a building. It is
further well known to customize a component to fit into
an existing system. Therefore, if the raised portions of
the ceiling grid system cause the ceiling board to lie
unevenly, it would have been obvious to one with ordinary
skill in the art to modify the board of Shaub by removing
the offending portions thereof, i.e. creating depressions
in the corners, to create a tolerance for the raised
portions of the ceiling grid system so that the support
edge means of the board may lie flat against the support
means of the ceiling grid system around the entire
perimeter, thus presenting a level finished construction
by modifying the ceiling board with a method old and well
known in the art.
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Last modified: November 3, 2007