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Individual
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Individual
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Priority to ES107404UpriorityCriticalpatent/ES107404U/en
Publication of ES107404UpublicationCriticalpatent/ES107404U/en
A pneumatic closure for doors characterized essentially by the fact of being constituted by a cylindrical chamber closed at its ends by respective lids of which one of them comprises a central passage for exiting the end of an axial rod to the cylinder provided with this rod at its end bottom of a piston in a glass formed and maintained in an advanced position by the effect of a helical spring comprised between the outer bottom of said vessel and one of the cylinder caps. (Machine-translation by Google Translate, not legally binding)
ES107404U1964-07-221964-07-22A pneumatic seal for doors (Machine-translation by Google Translate, not legally binding)
PendingES107404U
(en)