FR782553A - Système de téléphonie automatique - Google Patents
Système de téléphonie automatiqueInfo
- Publication number
- FR782553A FR782553A FR782553DA FR782553A FR 782553 A FR782553 A FR 782553A FR 782553D A FR782553D A FR 782553DA FR 782553 A FR782553 A FR 782553A
- Authority
- FR
- France
- Prior art keywords
- telephone system
- automatic telephone
- automatic
- telephone
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US702298A US2023239A (en) | 1933-12-14 | 1933-12-14 | Automatic telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR782553A true FR782553A (fr) | 1935-06-07 |
Family
ID=24820644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR782553D Expired FR782553A (fr) | 1933-12-14 | 1934-12-10 | Système de téléphonie automatique |
Country Status (2)
Country | Link |
---|---|
US (1) | US2023239A (fr) |
FR (1) | FR782553A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2586704A (en) * | 1942-08-06 | 1952-02-19 | Automatic Elect Lab | Message data recording telephone system |
GB565665A (en) * | 1942-08-06 | 1944-11-21 | Automatic Telephone & Elect | Improvements in telephone systems |
US2530845A (en) * | 1945-12-03 | 1950-11-21 | Automatic Elect Lab | Relay automatic telephone system |
US2568101A (en) * | 1947-01-08 | 1951-09-18 | Automatic Elect Lab | Automatic all-relay telephone system |
US2522720A (en) * | 1947-07-22 | 1950-09-19 | Automatic Elect Lab | All relay system in which local called telephone line is fed talking battery from connector or repeater |
US2562555A (en) * | 1948-02-24 | 1951-07-31 | Stromberg Carlson Co | Automatic telephone system |
US2862058A (en) * | 1954-05-18 | 1958-11-25 | Ericsson Telefon Ab L M | Selector systems |
-
1933
- 1933-12-14 US US702298A patent/US2023239A/en not_active Expired - Lifetime
-
1934
- 1934-12-10 FR FR782553D patent/FR782553A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2023239A (en) | 1935-12-03 |
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