Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/193,957external-prioritypatent/US4344588A/en
Application filed by American Safety EquipfiledCriticalAmerican Safety Equip
Application grantedgrantedCritical
Publication of ATE14291T1publicationCriticalpatent/ATE14291T1/en