Inventory report on Cisco stack switches

Inventory report on Cisco stack switches

Hy,
i have plenty switches 3750(stack of 3-4) and
2960 standalone switches(OID .1.3.6.1.4.1.9.1.1208).
Is there a way i can get for all those chasises to apear in my inventory report?
Now i just get blanks, an this is not something i wanna show to my management
when i get a request for our inventory numbers?

I work on Enterprise version 12.5.437.
Ty.