NL2457C - - Google Patents
Info
- Publication number
- NL2457C NL2457C NL2457DA NL2457C NL 2457 C NL2457 C NL 2457C NL 2457D A NL2457D A NL 2457DA NL 2457 C NL2457 C NL 2457C
- Authority
- NL
- Netherlands
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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2457T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2457C true NL2457C (cs) |
Family
ID=19750038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2457D NL2457C (cs) |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE318482C (cs) |
| NL (1) | NL2457C (cs) |
-
0
- NL NL2457D patent/NL2457C/xx active
- DE DENDAT318482D patent/DE318482C/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE318482C (cs) |
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| Publication | Publication Date | Title |
|---|---|---|
| DE318482C (cs) |