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 Nichols Eng & Res CorpfiledCriticalNichols Eng & Res Corp
Application grantedgrantedCritical
Publication of FI40680BpublicationCriticalpatent/FI40680B/fi