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INVENTORS: McKeen; W. John (Ottawa, CA)
ASSIGNEES: Northern Telecom Limited (Montreal, CA)
U.S. CLASS: 249/79; 249/80; 264/219; 264/308; 264/401
ABSTRACT: Making a mold part by a growth process in which polymerizable plastic material is converted into polymerized plastic material at selected regions and, during the growth process, cooling passages are formed. The growth process is provided by polymerizing succeeding layers of plastic material, adjacent layers being bonded together. Also provided is a mold part made by the growth process. XX
