Focused electromechanical device
United States Patent 2565159
US Patent References:
Piezoelectric system
- - 2447061

Transducer and method of making the same
- - 2486560

Fine wire delay line
- - 2503831


Inventors:
Williams, Alfred L. W.
Publication Date:
08/21/1951
View Patent Images:
Assignee:
BRUSH DEV CO
Primary Class:
Other Classes:
99/451, 381/190, 367/157, 367/166, 310/369, 310/334, 116/DIG.018, 310/371, 366/108, 99/646R
International Classes:
G10K11/32; G10K11/00
Foreign References:
DE654673C
GB574577A