340 N.E.2d 427 KAYSER ET AL., APPELLANTS, v. ESTABROOK COMPANY, INC., ET AL., APPELLEES. No. 7575Court of Appeals of Ohio. Decided February 15, 1974. Investment securities — Brokers — Margin account — Failure of customer to respond to demand for additional margin — Broker may sell securities held, when — Sufficient notice of sale given […]