FR311410A - - Google Patents
Info
- Publication number
- FR311410A FR311410A FR311410DA FR311410A FR 311410 A FR311410 A FR 311410A FR 311410D A FR311410D A FR 311410DA FR 311410 A FR311410 A FR 311410A
- Authority
- FR
- France
- 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.)
- Active
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
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
- H04Q1/36—Pulse-correcting arrangements, e.g. for reducing effects due to interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE674871X | 1928-05-12 | ||
| SE1831730X | 1928-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR311410A true FR311410A (ko) |
Family
ID=26656311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR311410D Active FR311410A (ko) | 1928-05-12 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1831730A (ko) |
| FR (1) | FR311410A (ko) |
| NL (1) | NL46259C (ko) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2579469A (en) * | 1939-03-24 | 1951-12-25 | Int Standard Electric Corp | Revertive calling party line system |
| NL66024C (ko) * | 1944-06-02 | |||
| US2500286A (en) * | 1946-08-30 | 1950-03-14 | Automatic Elect Lab | Impulse correcting repeater |
| US2500289A (en) * | 1946-08-30 | 1950-03-14 | Automatic Elect Lab | Telephone pulse repeater actuated by break period |
| GB641888A (en) * | 1947-02-07 | 1950-08-23 | Standard Telephones Cables Ltd | Improvements in or relating to electric signalling systems |
| US2574532A (en) * | 1948-01-15 | 1951-11-13 | Stromberg Carlson Co | Reverting call circuit |
| US3450843A (en) * | 1965-11-24 | 1969-06-17 | Bell Telephone Labor Inc | Dial pulse repeating and correcting circuit |
| KR101874262B1 (ko) * | 2017-11-15 | 2018-07-03 | 김재환 | 시공간 초월 온라인 탐방 운동 시스템 |
| US11452928B2 (en) | 2019-07-02 | 2022-09-27 | Jae Hwan Kim | System for providing virtual exercising place |
-
0
- FR FR311410D patent/FR311410A/fr active Active
- NL NL46259D patent/NL46259C/xx active
-
1929
- 1929-05-10 US US362048A patent/US1831730A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL46259C (ko) | |
| US1831730A (en) | 1931-11-10 |