FR493429A - Téléphone - Google Patents
TéléphoneInfo
- Publication number
- FR493429A FR493429A FR493429A FR493429DA FR493429A FR 493429 A FR493429 A FR 493429A FR 493429 A FR493429 A FR 493429A FR 493429D A FR493429D A FR 493429DA FR 493429 A FR493429 A FR 493429A
- Authority
- FR
- France
- Prior art keywords
- phone
- Prior art date
- 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
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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/57—Aspects of electrical interconnection between hearing aid parts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/603—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of mechanical or electronic switches or control elements
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Telephone Set Structure (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK350498X | 1917-03-31 | ||
DK493429X | 1917-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR493429A true FR493429A (fr) | 1919-08-08 |
Family
ID=62566550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR493429A Expired FR493429A (fr) | 1917-03-31 | 1918-05-22 | Téléphone |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE350498C (xx) |
FR (1) | FR493429A (xx) |
GB (1) | GB114850A (xx) |
NL (1) | NL4564C (xx) |
-
1918
- 1918-04-03 DE DE1918350498D patent/DE350498C/de not_active Expired
- 1918-04-11 GB GB621518A patent/GB114850A/en not_active Expired
- 1918-05-22 FR FR493429A patent/FR493429A/fr not_active Expired
- 1918-06-24 NL NL10058A patent/NL4564C/xx active
Also Published As
Publication number | Publication date |
---|---|
NL4564C (xx) | 1919-02-01 |
GB114850A (en) | 1919-01-23 |
DE350498C (de) | 1922-03-22 |
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