NL46870C - - Google Patents
Info
- Publication number
- NL46870C NL46870C NL46870DA NL46870C NL 46870 C NL46870 C NL 46870C NL 46870D A NL46870D A NL 46870DA NL 46870 C NL46870 C NL 46870C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
- Push-Button Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET46382D DE658604C (de) | 1936-02-05 | 1936-02-05 | Nummernschalter mit Einrichtung zur Sperrung bestimmter Anrufnummern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL46870C true NL46870C (fr) |
Family
ID=6540525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL46870D NL46870C (fr) | 1936-02-05 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2097384A (fr) |
| BE (2) | BE417207A (fr) |
| CH (1) | CH195492A (fr) |
| DE (1) | DE658604C (fr) |
| FR (2) | FR811200A (fr) |
| GB (2) | GB480248A (fr) |
| NL (1) | NL46870C (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2525909A (en) * | 1947-11-05 | 1950-10-17 | Joyce Maurice | Automatic telephone dialing instrument |
| US2656417A (en) * | 1948-11-30 | 1953-10-20 | James Kilburg Corp | Automatic telephone dialer |
| US2708221A (en) * | 1950-10-27 | 1955-05-10 | Joyce Maurice | Automatic telephone dialing instrument |
| US2970481A (en) * | 1956-04-05 | 1961-02-07 | Admiral Corp | Tuner control |
-
0
- BE BE419169D patent/BE419169A/xx unknown
- BE BE417207D patent/BE417207A/xx unknown
- NL NL46870D patent/NL46870C/xx active
-
1936
- 1936-02-05 DE DET46382D patent/DE658604C/de not_active Expired
- 1936-07-13 GB GB19477/36A patent/GB480248A/en not_active Expired
- 1936-08-26 FR FR811200D patent/FR811200A/fr not_active Expired
- 1936-08-27 CH CH195492D patent/CH195492A/fr unknown
- 1936-09-03 US US99285A patent/US2097384A/en not_active Expired - Lifetime
- 1936-12-30 GB GB35761/36A patent/GB466338A/en not_active Expired
-
1937
- 1937-01-07 FR FR816063D patent/FR816063A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH195492A (fr) | 1938-01-31 |
| GB466338A (en) | 1937-05-26 |
| BE419169A (fr) | |
| DE658604C (de) | 1938-04-11 |
| BE417207A (fr) | |
| US2097384A (en) | 1937-10-26 |
| FR811200A (fr) | 1937-04-08 |
| FR816063A (fr) | 1937-07-29 |
| GB480248A (en) | 1938-02-14 |