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Priority claimed from US05/949,652external-prioritypatent/US4252132A/en
Priority claimed from US06/031,427external-prioritypatent/US4331162A/en
Priority claimed from US06/060,217external-prioritypatent/US4276889A/en
Application filed by Shs Enterprises, Ltd.filedCriticalShs Enterprises, Ltd.
Priority claimed from EP79302118Aexternal-prioritypatent/EP0009980B1/de
Application grantedgrantedCritical
Publication of ATE4528T1publicationCriticalpatent/ATE4528T1/de