DK44418C - Attenuation device for insertion into the sound channel in acoustic devices. - Google Patents

Attenuation device for insertion into the sound channel in acoustic devices.

Info

Publication number
DK44418C
DK44418C DK44418DA DK44418C DK 44418 C DK44418 C DK 44418C DK 44418D A DK44418D A DK 44418DA DK 44418 C DK44418 C DK 44418C
Authority
DK
Denmark
Prior art keywords
sound channel
attenuation device
acoustic devices
acoustic
devices
Prior art date
Application number
Other languages
Danish (da)
Original Assignee
Electrical Res Prod Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrical Res Prod Inc filed Critical Electrical Res Prod Inc
Application granted granted Critical
Publication of DK44418C publication Critical patent/DK44418C/en

Links

DK44418D 1927-06-28 1928-05-07 Attenuation device for insertion into the sound channel in acoustic devices. DK44418C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44418XA 1927-06-28 1927-06-28

Publications (1)

Publication Number Publication Date
DK44418C true DK44418C (en) 1931-07-27

Family

ID=21710821

Family Applications (1)

Application Number Title Priority Date Filing Date
DK44418D DK44418C (en) 1927-06-28 1928-05-07 Attenuation device for insertion into the sound channel in acoustic devices.

Country Status (1)

Country Link
DK (1) DK44418C (en)

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