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 Felten & Guilieaume Fabrik ElefiledCriticalFelten & Guilieaume Fabrik Ele
Priority to IN144CA1991priorityCriticalpatent/IN177351B/en
Publication of IN177351BpublicationCriticalpatent/IN177351B/en