Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henry S Spackman Eng Co
Original Assignee
Henry S Spackman Eng Co
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 Henry S Spackman Eng CofiledCriticalHenry S Spackman Eng Co
Priority to ES43928ApriorityCriticalpatent/ES43928A2/en
Publication of ES43928A2publicationCriticalpatent/ES43928A2/en