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