Electroacoustical apparatus
United States Patent 2328941

Inventors:
Anderson, Leslie J.
Publication Date:
09/07/1943
View Patent Images:
Download PDF 2328941 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
RCA CORP
Primary Class:
381/91
Other Classes:
381/170, 381/111, 367/140, 367/137
International Classes:
H04R1/32