STANDARD OIL SAYS BP EXTENDS TENDER Standard Oil Co <SRD> said in a brief announcement issued after a meeting of its board of directors that British Petroleum Co PLC <BP.L> (BP) has extended its 70 dlr per share tender offer until midnight May 4. The offer for the 45 pct of Standard shares not owned by BP had been due to expire midnight April 28. Standard Oil said discussions with BP concerning the tender were continuing but provided no further details. "So long as those discussions continue, no recommendation will be made to Standard Oil shareholders regarding the offer," Standard said. Standard directors met at the company's Cleveland headquarters on Thursday in a regularly scheduled meeting. The spokesman was unable to say if the meeting would continue on Friday. A committee of independent directors previously obtained an opinion from First Boston Corp that the Standard shares were worth 85 dlrs each, 15 dlrs more than the BP offer.