US PATENT SUBCLASS 84 / 392
.~.~.~.~ Piston details
Current as of: June, 1999
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| 84 / | HD | MUSIC |
|
| 1 | DF | INSTRUMENTS {9} |
| 330 | DF | .~ Wind {5} |
| 387 R | DF | .~.~ Brasses {7} |
| 388 | DF | .~.~.~ Valve type {6} |
| 392 |  | .~.~.~.~ Piston details |
DEFINITION
Classification: 84/392
Details of the piston-valve.