KR840005930U - Megaphone - Google Patents

Megaphone

Info

Publication number
KR840005930U
KR840005930U KR2019830002024U KR830002024U KR840005930U KR 840005930 U KR840005930 U KR 840005930U KR 2019830002024 U KR2019830002024 U KR 2019830002024U KR 830002024 U KR830002024 U KR 830002024U KR 840005930 U KR840005930 U KR 840005930U
Authority
KR
South Korea
Prior art keywords
megaphone
Prior art date
Application number
KR2019830002024U
Other languages
Korean (ko)
Other versions
KR840002417Y1 (en
Inventor
한익전
Original Assignee
한익전
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 한익전 filed Critical 한익전
Priority to KR2019830002024U priority Critical patent/KR840002417Y1/en
Publication of KR840005930U publication Critical patent/KR840005930U/en
Application granted granted Critical
Publication of KR840002417Y1 publication Critical patent/KR840002417Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/04—Electric megaphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
KR2019830002024U 1983-03-09 1983-03-09 A megaphone KR840002417Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019830002024U KR840002417Y1 (en) 1983-03-09 1983-03-09 A megaphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019830002024U KR840002417Y1 (en) 1983-03-09 1983-03-09 A megaphone

Publications (2)

Publication Number Publication Date
KR840005930U true KR840005930U (en) 1984-11-10
KR840002417Y1 KR840002417Y1 (en) 1984-11-22

Family

ID=19228875

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019830002024U KR840002417Y1 (en) 1983-03-09 1983-03-09 A megaphone

Country Status (1)

Country Link
KR (1) KR840002417Y1 (en)

Also Published As

Publication number Publication date
KR840002417Y1 (en) 1984-11-22

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19891014

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee