SU354437A1 - - Google Patents

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Publication number
SU354437A1
SU354437A1 SU1466326A SU1466326A SU354437A1 SU 354437 A1 SU354437 A1 SU 354437A1 SU 1466326 A SU1466326 A SU 1466326A SU 1466326 A SU1466326 A SU 1466326A SU 354437 A1 SU354437 A1 SU 354437A1
Authority
SU
USSR - Soviet Union
Prior art keywords
card
light guide
key
punched
photodetector
Prior art date
Application number
SU1466326A
Other languages
English (en)
Russian (ru)
Publication of SU354437A1 publication Critical patent/SU354437A1/ru

Links

SU1466326A SU354437A1 (no)

Publications (1)

Publication Number Publication Date
SU354437A1 true SU354437A1 (no)

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