Title:
Public address housing assembly
United States Patent 2744584
Inventors:
Hellon, James B.
Publication Date:
05/08/1956
Export Citation:
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Assignee:
Hellon, James B.
Primary Class:
181/150
Other Classes:
181/151
International Classes:
H04R1/02; H04R1/02
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US Patent References:
2619893Motor-driven ventilating unit mounting
2581251Telephone booth
2282384Flush wall mounting for radio units
2165637Roof speaker mounting
2157609Ventilator
1944861Loud speaker cone
1905215Telephone system and apparatus
1843367Diaphragm
1823512Loud speaker
1738955Loud-speaker
Foreign References:
FR908709A