Appeal No. 96-1657
Application 07/819,345
limited authorization is required and nothing is contemplated
about multiple authorization for multiple users as required in
accessing a real estate lockbox. The second reference,
Marian, has nothing to do with any kind of secure access
system, but rather, deals with an electronic controller for
sprinkler systems. There may be numerous applications where
Marian’s device, having the capability of generating a single
paging signal containing plural control signals to control
plural systems, can be used, however, there is no suggestion,
explicit or otherwise, that it can be combined with a single
lock system disclosed by Ryoichi. The third reference,
Henderson concerns the electronic real estate lockbox system.
The purpose of Henderson’s system is so different and diverse
from that of Ryoichi’s system that we find no reason to
justifiably combine Henderson with Ryoichi.
The Federal Circuit has stated that “[the] mere fact that
the prior art may be modified in the manner suggested by the
Examiner does not make the modification obvious unless the
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