FR733549A - keypad current pulse transmitter - Google Patents
keypad current pulse transmitterInfo
- Publication number
- FR733549A FR733549A FR733549DA FR733549A FR 733549 A FR733549 A FR 733549A FR 733549D A FR733549D A FR 733549DA FR 733549 A FR733549 A FR 733549A
- Authority
- FR
- France
- Prior art keywords
- keypad
- current pulse
- pulse transmitter
- transmitter
- current
- 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
- H04M1/26—Devices for calling a subscriber
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
- H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE733549X | 1931-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR733549A true FR733549A (en) | 1932-10-07 |
Family
ID=20319615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR733549D Expired FR733549A (en) | 1931-03-16 | 1932-03-15 | keypad current pulse transmitter |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE387178A (en) |
DE (1) | DE599391C (en) |
FR (1) | FR733549A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537188A (en) * | 1948-06-14 | 1951-01-09 | Kaelin Pierre | Automatic telephone station selector set for transmitting station numbers |
US2561298A (en) * | 1948-01-30 | 1951-07-17 | Vanheerswynghels Joseph | Impulse transmitter for automatic telephone systems |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL100118C (en) * | 1953-10-10 | |||
DE2940608C2 (en) * | 1979-10-06 | 1983-11-17 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Telephone set |
-
0
- BE BE387178D patent/BE387178A/xx unknown
-
1931
- 1931-08-15 DE DET39308D patent/DE599391C/en not_active Expired
-
1932
- 1932-03-15 FR FR733549D patent/FR733549A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2561298A (en) * | 1948-01-30 | 1951-07-17 | Vanheerswynghels Joseph | Impulse transmitter for automatic telephone systems |
US2537188A (en) * | 1948-06-14 | 1951-01-09 | Kaelin Pierre | Automatic telephone station selector set for transmitting station numbers |
Also Published As
Publication number | Publication date |
---|---|
DE599391C (en) | 1934-07-11 |
BE387178A (en) |
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