COIN-OPERATED TELEPHONE SET Russian patent published in 1994 - IPC

FIELD: telephony. SUBSTANCE: device has telephone booth 1, protective housing 2, two phones 3, microphone 4, perforation holes 5, key telephone dial 6, "turn-off" and "turn-on" switches 7 and 8 correspondingly, volume control 9, drive disk 10, three guiding tooth plates 11. Device permits to exclude premeditated damage of phone handset, dial, lever switch. Talks m ay be performed by as short and tall person. EFFECT: improved efficiency of application. 2 dwg