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
Application filed by Leslie E Lawson, Frank E Smith, Smith PeterfiledCriticalLeslie E Lawson
Priority to CS34370ApriorityCriticalpatent/CS179357B2/en
Publication of CS179357B2publicationCriticalpatent/CS179357B2/en