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.)
United Carr Ltd
Original Assignee
United Carr Ltd
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 United Carr LtdfiledCriticalUnited Carr Ltd
Priority to ES436334ApriorityCriticalpatent/ES436334A1/en
Publication of ES436334A1publicationCriticalpatent/ES436334A1/en
A shutter for closing an opening in a sheet, comprising a portion of plate adapted to cover the opening and a separate elastic element having a plurality of resilient pins configured and adapted to automatically adjust under pressure within the opening, whereby the elastic element or spring is frictionally attached to the plate portion. (Machine-translation by Google Translate, not legally binding)
ES436334A1975-04-041975-04-04Gain control circuit. (Machine-translation by Google Translate, not legally binding)
ExpiredES436334A1
(en)