How to get sale deed if the company director dies

I purchased a in 3rd floor of a apartment flat in 1993 in Bhubaneswar. The Final full payment was made to the builder & financing agency LIC Housing with receipts. The flat possession was taken in 1995 & with me since then. I have paid registration fee to builders for purpose but sale deed not registered my name. However sale deed was not registered as it was omitted out of ignorance that time. I do not know where about the Seller Builder Company of the property now or not traceable. Company Director expired. I following documents have A) Between Builder & 1st Owner • Land Property Agreement • Sale Agreement • Construction Agreement • Building plan sanctioned by the Statutory Authority • Allotment Letter from the Builder • Possession disbursement Demand Letter from the vendor B) Others • Date of possession Property Latest Tax/Municipal Tax/Electricity Bill etc Paid Receipt in my name • EC up to date - applied • NOC from the owners Society What action should I take to get sale deed?