#6646842An ultrasonic instrument for visually impaired people, developed at the All-Union Scientific Research Institute of Medical Instrument Engineering, now the Tikhomirov Scientific Research Institute of Instrument Engineering.Sign in or register,to downloadAdd to cartRemove from cartCategories: Health, Science & TechnologyLocation: Moscow, RussiaEvent date: 01.01.1989Date published: 09.09.2021Author: Sergey PtitsynCredit: SputnikOriginal: 89-5554, 35 mm filmMedia: JPEG, 3543x5497px, 6.8MbtechnologyequipmentSovietdevelopmentproductioninstrumentsciencehealthcaredeviceUSSRScientific Research Institute of Medical Instrument Engineeringscientific research institute1980s