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Class Information
Number: 451/77
Name: Abrading > Machine > Sandblast > Spark plug
Description: Abrading machine specifically designed to perform abrading operations on a fuel igniting device for an internal combustion engine.

Patents under this class:

Patent Number Title Of Patent Date Issued
4242844 Spark plug cleaner with improved grit recycling Jan. 6, 1981
4202141 Two way spark plug cleaner and method May. 13, 1980
4165586 Spark plug cleaner and method Aug. 28, 1979
4084357 Valve cleaning machine Apr. 18, 1978
4062155 Spark plug cleaner Dec. 13, 1977
4028851 Sparkplug cleaner Jun. 14, 1977
3971162 Portable spark plug cleaner Jul. 27, 1976

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