May 20, 2015
VINOD KUMAR
On one of three side stems of the cylinder, the expiry date is coded A ,B , C or D with two digit number.
1.A for March (First Quarter)2.B for June (Second Quarter)3.C for Sept (Third Quarter)4.D for December (Fourth Quarter
Dec. 2006 is Expiry date
Dec. 2013 is Expiry Date
March. 2013 is Expiry Date