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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.
Application Number:
US34271664A
Publication Date:
06/21/1966
Filing Date:
02/05/1964
Assignee:
CHAMPION SPARK PLUG CO
Primary Class:
Other Classes:
313/144
International Classes:
H01T13/36
View Patent Images:
US Patent References:
2198892Shielded spark plug1940-04-30
2020967Spark plug and method of making the same1935-11-12
2020965Spark plug1935-11-12
1776424Spark plug1930-09-23
Foreign References:
FR985492A1951-07-19