FR1079888A - Further training in telephone amplifiers - Google Patents
Further training in telephone amplifiersInfo
- Publication number
- FR1079888A FR1079888A FR1079888DA FR1079888A FR 1079888 A FR1079888 A FR 1079888A FR 1079888D A FR1079888D A FR 1079888DA FR 1079888 A FR1079888 A FR 1079888A
- Authority
- FR
- France
- Prior art keywords
- further training
- telephone amplifiers
- amplifiers
- telephone
- training
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1079888T | 1953-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1079888A true FR1079888A (en) | 1954-12-03 |
Family
ID=9609384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1079888D Expired FR1079888A (en) | 1953-03-25 | 1953-03-25 | Further training in telephone amplifiers |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE527551A (en) |
FR (1) | FR1079888A (en) |
-
0
- BE BE527551D patent/BE527551A/xx unknown
-
1953
- 1953-03-25 FR FR1079888D patent/FR1079888A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE527551A (en) |
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