The court, which had reserved the judgement on September 12, was earlier scheduled to pronounce it on November 10 but deferred it for today as the order was not ready.
The accused had earlier approached the Supreme Court for quashing of the trial against them in the case.
The apex court had on August 17, 2012 dismissed their pleas on the ground that proceedings could not be quashed merely because they had not been concluded in the last 37 years.
Except Gopalji, all those listed in the charge sheet in the case were also named as accused in an attempt to murder case related to the bid on the life of then Chief Justice of India A N Ray in Delhi on March 20, 1975.
Santoshananda and Sudevananda were made accused in the Justice Ray case on the basis of a confessional statement of Vikram, who had turned an approver for CBI.
While Santoshananda and Sudevananda were awarded 10 years rigorous imprisonment (RI) each, Dwivedi was sentenced to four years RI by the trial court in the attempt to murder case.
They had challenged their conviction in the Justice Ray attempt to murder case on the ground that Vikram had retracted from his confession.
The Delhi High Court in August had upheld the conviction and sentence of Santoshananda and Sudevananda in the attempt to murder case but acquitted Dwivedi in the case.
During the final arguments in the l N Mishra murder case, CBI prosecutor had asked the court to consider the testimonies of two accused-turned-approvers in the case, saying their statements were important.
The prosecutor had said testimonies of Vikram and Madan Mohan Srivastava, alias Visheshwarananda, as approvers must be taken into account because they had participated in the conspiracy to kill Mishra in 1975 and they knew the entire details of the case.