Date on which the trademark application was filed with TMO?

Dn was applied on 09 May 1978.

Who is the trademark proprietor?

Trademark application was filed by DEEPAK NITRITE.

Trademark application is filed under which trademark class?

Trademark application has been filed under following classes.
1

Trademark application is at what stage of trademark process?

As per IP India, trademark application is on the following stage:
Registered.

What is the Listed Application ID of the Trademark?

Listed application Id of Dn is 336369.

Is the Trademark word, color or device mark?

Dn is a DEVICE as per IP India data.