FR1002222A - Portable hearing aid - Google Patents
Portable hearing aidInfo
- Publication number
- FR1002222A FR1002222A FR1002222DA FR1002222A FR 1002222 A FR1002222 A FR 1002222A FR 1002222D A FR1002222D A FR 1002222DA FR 1002222 A FR1002222 A FR 1002222A
- Authority
- FR
- France
- Prior art keywords
- hearing aid
- portable hearing
- portable
- aid
- hearing
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1002222T | 1946-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1002222A true FR1002222A (en) | 1952-03-04 |
Family
ID=9561955
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1002222D Expired FR1002222A (en) | 1946-08-17 | 1946-08-17 | Portable hearing aid |
FR57044D Expired FR57044E (en) | 1946-08-17 | 1946-10-28 | Portable hearing aid |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR57044D Expired FR57044E (en) | 1946-08-17 | 1946-10-28 | Portable hearing aid |
Country Status (1)
Country | Link |
---|---|
FR (2) | FR1002222A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971763C (en) * | 1954-04-18 | 1959-03-26 | Fredo Nestler | Switching arrangement for telephone systems |
-
1946
- 1946-08-17 FR FR1002222D patent/FR1002222A/en not_active Expired
- 1946-10-28 FR FR57044D patent/FR57044E/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971763C (en) * | 1954-04-18 | 1959-03-26 | Fredo Nestler | Switching arrangement for telephone systems |
Also Published As
Publication number | Publication date |
---|---|
FR57044E (en) | 1952-10-21 |
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