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Title:
Spark plug with improved seal between the shell and insulator
United States Patent 3257503
Inventors:
Lentz, Lawrence R.
Kosydar, Theodore A.
Publication Date:
06/21/1966
Assignee:
CHAMPION SPARK PLUG CO
Primary Class:
Other Classes:
313/144
International Classes:
H01T13/36
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Foreign References:
FR985492A