KR870004502U - Megaphone - Google Patents
MegaphoneInfo
- Publication number
- KR870004502U KR870004502U KR2019850011007U KR850011007U KR870004502U KR 870004502 U KR870004502 U KR 870004502U KR 2019850011007 U KR2019850011007 U KR 2019850011007U KR 850011007 U KR850011007 U KR 850011007U KR 870004502 U KR870004502 U KR 870004502U
- Authority
- KR
- South Korea
- Prior art keywords
- megaphone
- Prior art date
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)
- Amplifiers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019850011007U KR880001883Y1 (en) | 1985-08-28 | 1985-08-28 | Megaphones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019850011007U KR880001883Y1 (en) | 1985-08-28 | 1985-08-28 | Megaphones |
Publications (2)
Publication Number | Publication Date |
---|---|
KR870004502U true KR870004502U (en) | 1987-07-31 |
KR880001883Y1 KR880001883Y1 (en) | 1988-05-21 |
Family
ID=19244978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019850011007U KR880001883Y1 (en) | 1985-08-28 | 1985-08-28 | Megaphones |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR880001883Y1 (en) |
-
1985
- 1985-08-28 KR KR2019850011007U patent/KR880001883Y1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR880001883Y1 (en) | 1988-05-21 |
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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: 19910311 Year of fee payment: 4 |
|
LAPS | Lapse due to unpaid annual fee |