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.)
Individual
Original Assignee
Individual
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 IndividualfiledCriticalIndividual
Priority to ES0021502UpriorityCriticalpatent/ES21502Y/en
Publication of ES21502UpublicationCriticalpatent/ES21502U/en
Application grantedgrantedCritical
Publication of ES21502YpublicationCriticalpatent/ES21502Y/en
Screw with hollow in the head, characterized in that the head, of any exterior shape, presents an axial hollow, of polygonal shape and of appropriate dimensions so that it can fit the end, of section similar to the hollow, of a key or appropriate tool to tighten the screw. (Machine-translation by Google Translate, not legally binding)
ES0021502U1949-11-191949-11-19
Screw with hole in the head.
ExpiredES21502Y
(en)