GB709504A - Means for identifying and marking telephone calls - Google Patents
Means for identifying and marking telephone callsInfo
- Publication number
- GB709504A GB709504A GB16887/52A GB1688752A GB709504A GB 709504 A GB709504 A GB 709504A GB 16887/52 A GB16887/52 A GB 16887/52A GB 1688752 A GB1688752 A GB 1688752A GB 709504 A GB709504 A GB 709504A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gap
- fired
- tube
- lit
- marker
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE709504X | 1951-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB709504A true GB709504A (en) | 1954-05-26 |
Family
ID=20315684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16887/52A Expired GB709504A (en) | 1951-07-05 | 1952-07-04 | Means for identifying and marking telephone calls |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE512622A (fi) |
FR (1) | FR1063262A (fi) |
GB (1) | GB709504A (fi) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2954439A (en) * | 1953-07-03 | 1960-09-27 | Int Standard Electric Corp | Electrical identification circuit |
-
0
- BE BE512622D patent/BE512622A/xx unknown
-
1952
- 1952-07-04 GB GB16887/52A patent/GB709504A/en not_active Expired
- 1952-07-05 FR FR1063262D patent/FR1063262A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2954439A (en) * | 1953-07-03 | 1960-09-27 | Int Standard Electric Corp | Electrical identification circuit |
Also Published As
Publication number | Publication date |
---|---|
BE512622A (fi) | |
FR1063262A (fr) | 1954-04-30 |
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