The Selective Service System withdrew Friday a number of proposed changes in draft regulations including a revision of the conscientious objector (C.O.) form.

Kenneth J. Coffey, public information director of the Selective Service System, said he did not know when a new C.O. form would be ready. "We have a lot of study to do and it will be a while before we have a new draft," he said. A 1970 Supreme Court decision invalidated the present form by allowing objection on ethical as well as religious beliefs.

Don Solomon of the Committee for Legal Research on the Draft said after the form was released in mid-November that "it contains some questions that are irrelevant, others that are misleading, and most are directed toward a glib, over-intellectualized student group."

Another proposal withdrawn Friday would have changed regulations dealing with appearances before local and appeal boards.

Selective Service Director Curtis Tarr said Friday that no personal appearances or appeals would be heard until new regulations were formulated. This action will halt the induction of all men eligible for appeal hearings until at least February 1.