BE467392A - - Google Patents
Info
- Publication number
- BE467392A BE467392A BE467392DA BE467392A BE 467392 A BE467392 A BE 467392A BE 467392D A BE467392D A BE 467392DA BE 467392 A BE467392 A BE 467392A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
- A44B19/44—Securing metal interlocking members to ready-made stringer tapes
- A44B19/46—Securing separate interlocking members
- A44B19/48—Arranging interlocking members before securing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8492/44A GB584677A (en) | 1944-05-05 | 1944-05-05 | Improvements in or relating to telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE467392A true BE467392A (en) |
Family
ID=9853491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE467392D BE467392A (en) | 1944-05-05 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2486100A (en) |
| BE (1) | BE467392A (en) |
| GB (1) | GB584677A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE482466A (en) * | 1947-04-29 | |||
| US2566009A (en) * | 1947-12-12 | 1951-08-28 | Automatic Elect Lab | Interexchange switching telephone system |
| US2693526A (en) * | 1949-06-15 | 1954-11-02 | Automatic Elect Lab | Single channel single frequency mobile radio telephone system |
| US2636947A (en) * | 1949-12-16 | 1953-04-28 | Bell Telephone Labor Inc | Two-way trunk for pulse conversion systems |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2155176A (en) * | 1936-11-07 | 1939-04-18 | Associated Electric Lab Inc | Telephone system |
| GB489755A (en) * | 1937-01-25 | 1938-07-25 | Standard Telephones Cables Ltd | Improvements in or relating to electric signalling systems |
| NL64785C (en) * | 1943-02-13 | |||
| US2374884A (en) * | 1943-08-19 | 1945-05-01 | Bell Telephone Labor Inc | Signaling system |
| US2368056A (en) * | 1943-08-19 | 1945-01-23 | Bell Telephone Labor Inc | Signaling system |
| US2425066A (en) * | 1945-02-26 | 1947-08-05 | Standard Telephones Cables Ltd | Pulsed multiplex system employing different width and repetition frequencies for each channel |
-
0
- BE BE467392D patent/BE467392A/xx unknown
-
1944
- 1944-05-05 GB GB8492/44A patent/GB584677A/en not_active Expired
-
1945
- 1945-03-24 US US584620A patent/US2486100A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2486100A (en) | 1949-10-25 |
| GB584677A (en) | 1947-01-21 |