Title:
Soundproof shield
United States Patent 2684067
Inventors:
Lienard, Pierre A.
Publication Date:
07/20/1954
Export Citation:
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Assignee:
ONERA (OFF NAT AEROSPATIALE)
Primary Class:
128/866
International Classes:
A42B3/16
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US Patent References:
2566975Voice silencer
2536261Microphone sound filter
2478783Telephone mouthpiece voice silencer with plural silencing chambers
2313379Mounting means for electrically operated units
2037884Silencer
1873864Ear mask
Foreign References:
FR977197A
FR1014280A