Keyboard with protection film

@inproceedings{1996KeyboardWP,
  title={Keyboard with protection film},
  author={Герхард Хохгезанг and Вернер Лорц},
  year={1996}
}
FIELD: shop and fiscal cash registers. SUBSTANCE: keyboard has protection film, which is designed as shaped part, which is applied on keyboard by means of bell-shaped hollow projections 8, corresponding to each key 4 and running from base surface 7. projections 8 corresponding to key 4 are additionally covered with removable caps 9. EFFECT: facilitated cleaning of keyboard, attractive look. 7 cl, 3 dwg 

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