Cenvat credit within 6 month as per budget 2014

Res. Sir,

we are mfg.(HO) and sold exciseable goods to our branch, if our branch send us exciseable goods back (Goods Return).

for example : we sold goods to branch on 01-10-2013 (by excise invoice) and our branch send back the same goods to us on 10-07-2014.

1) Please suggest us can we take cenvat credit for the same as per budget 2014?

2) Please also suggest us which document is required to take cenvat credit of duty paid goods?

Thanking You,