Device for the transmission of mechanical vibrations to a material medium
United States Patent 2772862
Inventors:
Suchtelen, Harold Van
Publication Date:
12/04/1956
Assignee:
HARTFORD NAT BANK & TRUST CO
Other Classes:
310/323.010, 366/113, 310/26, 417/322, 366/116
International Classes:
B01J19/10