Method and device for hydraulically tensing or relaxing a membrane of a musical instrument
A Standard patent application filed on 14 January 2000 credited to Dill, Dieter Roman
;
Faulwasser, David
Details
Application number :
25354
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
Method and device for hydraulically tensing or relaxing a membrane of a musical instrument