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Priority to ES1978236882UpriorityCriticalpatent/ES236882Y/en
Publication of ES236882UpublicationCriticalpatent/ES236882U/en
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Publication of ES236882YpublicationCriticalpatent/ES236882Y/en
Improved grating for tubular connection, essentially characterized in that it comprises the provision of an external lining, mounted peripherally on the corresponding ends of the tube and accessory intended for joining, this tubular lining having at one end a bevel whose profile determines a perfect fit, serving of guide and fixing to the corresponding connecting tube, and from the opposite end there is a threaded area internally intended to be joined to the thread of the accessory, existing at this point and in its outer part an annular bead of structural reinforcement. (Machine-translation by Google Translate, not legally binding)
ES1978236882U1978-06-271978-06-27
PERFECTED RACORD FOR TUBULAR JOINT.
ExpiredES236882Y
(en)
Improvements in the unión parts for the construction of a branch in a fundamentally round section ventilation channel. (Machine-translation by Google Translate, not legally binding)