DE9206542U1 - - Google Patents
Info
- Publication number
- DE9206542U1 DE9206542U1 DE9206542U DE9206542U DE9206542U1 DE 9206542 U1 DE9206542 U1 DE 9206542U1 DE 9206542 U DE9206542 U DE 9206542U DE 9206542 U DE9206542 U DE 9206542U DE 9206542 U1 DE9206542 U1 DE 9206542U1
- Authority
- DE
- Germany
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73283591A | 1991-07-19 | 1991-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9206542U1 true DE9206542U1 (en) | 1992-08-20 |
Family
ID=24945132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9206542U Expired - Lifetime DE9206542U1 (en) | 1991-07-19 | 1992-05-14 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN2137411Y (en) |
| DE (1) | DE9206542U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103297572A (en) * | 2013-05-15 | 2013-09-11 | 江苏奇异点网络有限公司 | Novel safe interphone |
-
1991
- 1991-11-14 CN CN91228653U patent/CN2137411Y/en not_active Expired - Lifetime
-
1992
- 1992-05-14 DE DE9206542U patent/DE9206542U1/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103297572A (en) * | 2013-05-15 | 2013-09-11 | 江苏奇异点网络有限公司 | Novel safe interphone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2137411Y (en) | 1993-06-30 |