Title:
Percussion system
United States Patent 3003383


Inventors:
Williams, Richard E.
Application Number:
US75385958A
Publication Date:
10/10/1961
Filing Date:
08/05/1958
Assignee:
Williams, Richard E.
Primary Class:
Other Classes:
84/639, 84/DIG.12, 84/DIG.23, 984/358
International Classes:
G10H3/06
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