Title:
Sound generating and directing apparatus
United States Patent 2064911

Inventors:
Hayes, Harvey C.
Publication Date:
12/22/1936
View Patent Images:
Download PDF 2064911 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Hayes, Harvey C.
Primary Class:
367/151
Other Classes:
181/175, 381/190, 310/23, 310/26, 181/173, 367/156, 381/186, 116/DIG.019, 381/160
International Classes:
B06B1/08; G10K9/12; B06B1/02; G10K9/00