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.)
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 filedfiledCritical
Priority to JP12877976ApriorityCriticalpatent/JPS5354846A/ja
Publication of JPS5354846ApublicationCriticalpatent/JPS5354846A/ja
Publication of JPS5516033B2publicationCriticalpatent/JPS5516033B2/ja
Specific Sealing Or Ventilating Devices For Doors And Windows
(AREA)
JP12877976A1976-10-281976-10-28Automatic opening and closing device of smoke vent and ventilator in staircase and room without window
GrantedJPS5354846A
(en)
