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Class 84/53 - Lower leaf moved


Subclass of Class 84 - Music
Definition: Like the preceding subclass except that there is no secondary
No. of patents: 1
Last issue date: 10/28/1986


NumberTitleIssue Date
4619177Musical instrument pneumatic actuator
A musical instrument pneumatic actuator uses valve seats and a vacuum tube which are integral with one of two plastic main body pieces. An anti-warp brace and curved recessed portion are respectively used to minimize warpage and wear on the bellows. A bev... 		10/28/1986
 
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