Title:
Noise masking installation
United States Patent 3298455
Inventors:
Kodaras, Michael J.
Duda, John F.
Publication Date:
01/17/1967
Export Citation:
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Assignee:
ELOF HANSSON INC
Primary Class:
181/141
Other Classes:
181/30
International Classes:
G10K11/175; G10K11/00
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US Patent References:
3229429Secure conference systems
3104543Acoustical vibration test device
2001812Alarm device for safes
0811140N/A