00273nam a2200109Ia 4500008004100000041000800041082001300049100001700062245002500079260004600104300001300150230627s9999    xx            000 0 und d  aeng  a453bPRO  aProfessional  aThe Patents Act,1970  aDelhibProfessional Book Publishersc2018  a112 pgs.