BE482052A - - Google Patents
Info
- Publication number
- BE482052A BE482052A BE482052A BE482052A BE482052A BE 482052 A BE482052 A BE 482052A BE 482052 A BE482052 A BE 482052A BE 482052 A BE482052 A BE 482052A BE 482052 A BE482052 A BE 482052A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
- H04W88/188—Selective call encoders for paging networks, e.g. paging centre devices using frequency address codes
-
- 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
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US735939A US2457149A (en) | 1947-03-20 | 1947-03-20 | Selective signaling circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE482052A true BE482052A (US06168655-20010102-C00055.png) | 1948-10-23 |
Family
ID=63556069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE482052A BE482052A (US06168655-20010102-C00055.png) | 1947-03-20 | 1948-04-23 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2457149A (US06168655-20010102-C00055.png) |
| BE (1) | BE482052A (US06168655-20010102-C00055.png) |
| FR (1) | FR963490A (US06168655-20010102-C00055.png) |
| GB (1) | GB663859A (US06168655-20010102-C00055.png) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2591937A (en) * | 1947-05-01 | 1952-04-08 | Automatic Elect Lab | Selective calling system |
| US2547024A (en) * | 1947-05-23 | 1951-04-03 | Motorola Inc | Selective calling system |
| US2547025A (en) * | 1947-05-23 | 1951-04-03 | Motorola Inc | Frequency selective calling system |
| US2547023A (en) * | 1947-05-23 | 1951-04-03 | Motorola Inc | Selective calling system |
| US2602853A (en) * | 1947-08-07 | 1952-07-08 | Bell Telephone Labor Inc | Selective signaling system |
| US2658188A (en) * | 1948-06-29 | 1953-11-03 | Bell Telephone Labor Inc | Pulse position dialing system with direct time measuring apparatus |
| US2630482A (en) * | 1948-07-10 | 1953-03-03 | Bell Telephone Labor Inc | Tuned vibrating reed selective circuit |
| GB673173A (US06168655-20010102-C00055.png) * | 1949-04-02 | |||
| US2666196A (en) * | 1949-06-07 | 1954-01-12 | Bell Telephone Labor Inc | Frequency station calling system using bifurcated piezoelectric elements |
| US2693526A (en) * | 1949-06-15 | 1954-11-02 | Automatic Elect Lab | Single channel single frequency mobile radio telephone system |
| USRE24680E (en) * | 1950-09-22 | 1959-08-11 | Automatic telephone exchanges | |
| US2991562A (en) * | 1953-04-10 | 1961-07-11 | Donald G C Hare | Training aid system for wave detection equipment |
| NL96282C (US06168655-20010102-C00055.png) * | 1954-12-30 | |||
| DE1025023B (de) * | 1955-01-15 | 1958-02-27 | Deutsche Bundespost | Selektivrufsystem fuer die Wahl von Fernsprechteilnehmern in Sprechfunknetzen |
| US2975410A (en) * | 1955-06-06 | 1961-03-14 | Itt | Data translating system |
| US2961649A (en) * | 1956-03-09 | 1960-11-22 | Kenneth R Eldredge | Automatic reading system |
| US2934745A (en) * | 1956-08-06 | 1960-04-26 | Karl L Kocmanek | Remote frequency selection system |
| US2980794A (en) * | 1957-06-13 | 1961-04-18 | Fairchild Camera Instr Co | Automatic tone decoder |
| US3023373A (en) * | 1958-05-15 | 1962-02-27 | Thompson Ramo Wooldridge Inc | Precision variable frequency generator |
| US3729581A (en) * | 1970-09-03 | 1973-04-24 | Display Sys Corp | Computer assisted dial access video retrieval for an instructional television system |
-
1947
- 1947-03-20 US US735939A patent/US2457149A/en not_active Expired - Lifetime
-
1948
- 1948-03-19 FR FR963490D patent/FR963490A/fr not_active Expired
- 1948-03-19 GB GB8227/48A patent/GB663859A/en not_active Expired
- 1948-04-23 BE BE482052A patent/BE482052A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR963490A (US06168655-20010102-C00055.png) | 1950-07-11 |
| US2457149A (en) | 1948-12-28 |
| GB663859A (en) | 1951-12-27 |
