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 Vaclav Mrstina, Jiri Albrecht, Josef DomasfiledCriticalVaclav Mrstina
Priority to CS777170ApriorityCriticalpatent/CS193320B1/cs
Publication of CS193320B1publicationCriticalpatent/CS193320B1/cs
CS777170A1977-11-031977-11-03Highly effective needle-punched fabric for industrial filtration of air-borne materials and method of manufacturing same
CS193320B1
(en)