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.)
Bundy Tubing Co
Original Assignee
Bundy Tubing 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 Bundy Tubing CofiledCriticalBundy Tubing Co
Publication of ES237564A1publicationCriticalpatent/ES237564A1/en
Method of manufacturing double-walled tubes, characterized by comprising placing a strip of material, with separate lateral edges, inside a section of tube and reducing the diameter of said tube until the mentioned lateral edges are placed in relation of contiguity of the faces. (Machine-translation by Google Translate, not legally binding)
ES0237564A1956-09-131957-09-12Procedure for the manufacture of double wall pipes (Machine-translation by Google Translate, not legally binding)
ExpiredES237564A1
(en)
Ceramic pieces for the construction of tubes. With the registration priority of 10-5-54 and as a duplication of model 41919 of the aforementioned date (Machine-translation by Google Translate, not legally binding)