Typewriters - Keyboard for electro-medianically operated typewriters, arrangement of the keys and symbols, spacing of the keys
€16.45
Alphanumeric office machines - Allocation of keys for electro-mechanical operated typewriters
€24.39
Calculating machines
Keys; Components for buttons; Typewriters
Typewriters; classification
Typwriters - Terms
€48.79
Keyboards, key spacing; Guidelines for new design; Typewriters
Keypad - Arrangement of Character - Typewriters
Typewriters; keyboard for manually operated typewriters
Typewriters - Keyboard for electro-mechanically operated typewriters
€69.91
