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Date Code for 9013 Pressure Switches

Where is the date code for a 9013 pressure switch?

Product Line:
9013 Pressure Switches - GIC Product

US Product

Product Characteristics

Current units manufactured in Mexico have a four digit numerical value stamped on the base plate indicating date in the form YYWW (year/week).  Prior to this, units were stamped or printed with a two digit letter code indicating the date of manufacture.  See the attached document for how this code can be interpreted.
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