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.)
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Application filed by Gilbert & Barker Manufacturing CompanyfiledCriticalGilbert & Barker Manufacturing Company
Priority to GR280101991ApriorityCriticalpatent/GR1991B/en
Publication of GR1991BpublicationCriticalpatent/GR1991B/en