US PATENT SUBCLASS 84 / 80
.~.~.~.~.~ Key slips
Current as of: June, 1999
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| 84 / | HD | MUSIC |
|
| 1 | DF | INSTRUMENTS {9} |
| * | DD | .~ Automatic {13} |
| 7 | DF | .~.~ Stringed {4} |
| 13 | DF | .~.~.~ Pianos {5} |
| * | DD | .~.~.~.~ Cases {3} |
| 80 |  | .~.~.~.~.~ Key slips |
DEFINITION
Classification: 84/80
The key-slip or part of it is movable to uncover or shift various parts preparatory to playing.