Electronic Keyboard

PAT. NO.

Title

51

4,276,802

Electronic keyboard instrument

52

4,258,602

Electronic keyboard musical instrument of wave memory reading type

53

4,121,048

Multiple shift electronic keyboard

54

4,000,674

One key chording system for an electronic keyboard instrument

55

3,968,488

Electronic keyboard

56

3,943,812

Touch responsive sensor in electronic keyboard musical instrument

• Electronic keyboard musical instrument and a method of operating the same
• One key chording system for an electronic keyboard instrument