FR741727A - - Google Patents
Info
- Publication number
- FR741727A FR741727A FR741727DA FR741727A FR 741727 A FR741727 A FR 741727A FR 741727D A FR741727D A FR 741727DA FR 741727 A FR741727 A FR 741727A
- Authority
- FR
- France
- 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
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR41902T | 1931-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741727A true FR741727A (xx) | 1933-02-18 |
Family
ID=8678024
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741727D Expired FR741727A (xx) | 1931-12-23 | ||
| FR41902D Expired FR41902E (fr) | 1931-12-23 | 1931-12-23 | Procédé et dispositif d'enregistrement des conversations téléphoniques |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR41902D Expired FR41902E (fr) | 1931-12-23 | 1931-12-23 | Procédé et dispositif d'enregistrement des conversations téléphoniques |
Country Status (1)
| Country | Link |
|---|---|
| FR (2) | FR41902E (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5844979A (en) * | 1995-02-16 | 1998-12-01 | Global Technologies, Inc. | Intelligent switching system for voice and data |
-
0
- FR FR741727D patent/FR741727A/fr not_active Expired
-
1931
- 1931-12-23 FR FR41902D patent/FR41902E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR41902E (fr) | 1933-05-03 |