NL93838C - - Google Patents
Info
- Publication number
- NL93838C NL93838C NL93838DA NL93838C NL 93838 C NL93838 C NL 93838C NL 93838D A NL93838D A NL 93838DA NL 93838 C NL93838 C NL 93838C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Television Receiver Circuits (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE746698X | 1953-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL93838C true NL93838C (https=) |
Family
ID=20323247
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL93838D NL93838C (https=) | 1953-02-18 | ||
| NLAANVRAGE8700301,A NL185193B (nl) | 1953-02-18 | Bedtafelblad voor ziekenhuisnachtkastjes. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE8700301,A NL185193B (nl) | 1953-02-18 | Bedtafelblad voor ziekenhuisnachtkastjes. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2883464A (https=) |
| GB (1) | GB746698A (https=) |
| NL (2) | NL185193B (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7113750A (https=) * | 1971-10-07 | 1973-04-10 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2184826A (en) * | 1936-11-20 | 1939-12-26 | Lorenz C Ag | Signal transmission system |
| DE733974C (de) * | 1938-07-26 | 1943-04-06 | Lorenz C Ag | Traegerfrequenz-UEbertragungsanlage mit Mehrstufenmodulation |
| GB519264A (en) * | 1938-10-10 | 1940-03-20 | Philips Nv | Improvements in or relating to multi-carrier transmission systems |
| US2202474A (en) * | 1939-01-04 | 1940-05-28 | Bell Telephone Labor Inc | Telephone system |
| US2225697A (en) * | 1939-09-27 | 1940-12-24 | Bell Telephone Labor Inc | Modulation |
| US2264396A (en) * | 1940-10-22 | 1941-12-02 | Bell Telephone Labor Inc | Power line carrier frequency telephone system |
| FR960982A (https=) * | 1945-05-15 | 1950-04-28 | ||
| US2775646A (en) * | 1950-11-30 | 1956-12-25 | Hartford Nat Bank & Trust Co | Single-sideband apparatus |
-
0
- NL NL93838D patent/NL93838C/xx active
- NL NLAANVRAGE8700301,A patent/NL185193B/xx unknown
-
1954
- 1954-02-17 US US410803A patent/US2883464A/en not_active Expired - Lifetime
- 1954-02-18 GB GB4868/54A patent/GB746698A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2883464A (en) | 1959-04-21 |
| NL185193B (nl) | |
| GB746698A (en) | 1956-03-21 |