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.)
Societa Applicazioni Gomma Antivibranti SAGA SpA
Original Assignee
Societa Applicazioni Gomma Antivibranti SAGA SpA
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.)
Solid-Sorbent Or Filter-Aiding Compositions
(AREA)
Abstract
An improvement in the sound-absorbing panels, of the type constituted by a perforated sheet coated on its back surface by a porous layer, characterized in that the porous layer is crossed by funnel-shaped openings, in whose lower base there is at least one one of the holes made in the sheet. (Machine-translation by Google Translate, not legally binding)
ES276957A1962-04-251962-04-25A perfection in the phonoabsorbent panels (Machine-translation by Google Translate, not legally binding)
ExpiredES276957A3
(en)
A procedure for the manufacture of fibrous structures covered irregularly and/or interruptly with synthetic material. (Machine-translation by Google Translate, not legally binding)