INVERNESS BUYS ASSETS FROM PARENT SILVERTON <Inverness Petroleum Ltd> said it acquired the oil and gas assets of its controlling shareholder <Silverton Resources Ltd> for 26.4 mln dlrs, effective March 3, 1987. Inverness said it issued 2,640,000 class A convertible retractable redeemable preferred shares in exchange for the assets, which include all Silverton's oil and gas properties, undeveloped acreage and its shares of Australian subsidiary S.R.L. Exploration Pty Ltd. The preferred shares were immediately retracted for cash, the company said. The transaction resulted in a discharge of Silverton's bank debt of 21.0 mln dlrs and a three mln dlr loan to Inverness from Silverton, Inverness said. As a result of the acquisition, Inverness has bank debt of 18.0 mln dlrs, it said.