CLARK, Associate Justice.
The appellants, Dr. Marrese and William T. O'Sullivan, appeal from an adverse judgment in their consolidated actions for patent infringement against Airco, Inc. and its sales agent, Richard's Medical Equipment, Inc. Appellants applied for and were jointly granted a patent covering a system for use in hospitals which prevents anaesthetic gases from escaping an anaesthesia circuit into an operating room and thus protecting the occupants of...
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