BE390065A - - Google Patents
Info
- Publication number
- BE390065A BE390065A BE390065DA BE390065A BE 390065 A BE390065 A BE 390065A BE 390065D A BE390065D A BE 390065DA BE 390065 A BE390065 A BE 390065A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE758873X | 1932-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE390065A true BE390065A (https=) |
Family
ID=3879838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE390065D BE390065A (https=) | 1932-07-27 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE390065A (https=) |
| FR (1) | FR758873A (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2723676B1 (fr) * | 1994-08-09 | 1996-10-18 | Gourdain Daniel | Dispositif anti-pollution pour telephone |
-
0
- BE BE390065D patent/BE390065A/xx unknown
-
1933
- 1933-07-24 FR FR758873D patent/FR758873A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR758873A (fr) | 1934-01-24 |