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KR870019345U - loud speaker - Google Patents

loud speaker

Info

Publication number
KR870019345U
KR870019345U KR2019860007418U KR860007418U KR870019345U KR 870019345 U KR870019345 U KR 870019345U KR 2019860007418 U KR2019860007418 U KR 2019860007418U KR 860007418 U KR860007418 U KR 860007418U KR 870019345 U KR870019345 U KR 870019345U
Authority
KR
South Korea
Prior art keywords
loud speaker
loud
speaker
Prior art date
Application number
KR2019860007418U
Other languages
Korean (ko)
Other versions
KR890003507Y1 (en
Inventor
박춘우
Original Assignee
박춘우
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 박춘우 filed Critical 박춘우
Priority to KR2019860007418U priority Critical patent/KR890003507Y1/en
Publication of KR870019345U publication Critical patent/KR870019345U/en
Application granted granted Critical
Publication of KR890003507Y1 publication Critical patent/KR890003507Y1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
KR2019860007418U 1986-05-27 1986-05-27 Loud speaker KR890003507Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860007418U KR890003507Y1 (en) 1986-05-27 1986-05-27 Loud speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860007418U KR890003507Y1 (en) 1986-05-27 1986-05-27 Loud speaker

Publications (2)

Publication Number Publication Date
KR870019345U true KR870019345U (en) 1987-12-28
KR890003507Y1 KR890003507Y1 (en) 1989-05-25

Family

ID=19252114

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860007418U KR890003507Y1 (en) 1986-05-27 1986-05-27 Loud speaker

Country Status (1)

Country Link
KR (1) KR890003507Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102112989B1 (en) 2020-02-12 2020-05-20 주재규 Loudspeaker for emergency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102112989B1 (en) 2020-02-12 2020-05-20 주재규 Loudspeaker for emergency

Also Published As

Publication number Publication date
KR890003507Y1 (en) 1989-05-25

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee