NL77436C - - Google Patents
Info
- Publication number
- NL77436C NL77436C NL77436DA NL77436C NL 77436 C NL77436 C NL 77436C NL 77436D A NL77436D A NL 77436DA NL 77436 C NL77436 C NL 77436C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2643300X | 1947-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL77436C true NL77436C (it) |
Family
ID=4570742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL77436D NL77436C (it) | 1947-11-04 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2643300A (it) |
| BE (1) | BE483204A (it) |
| CH (4) | CH269349A (it) |
| FR (1) | FR1014029A (it) |
| NL (1) | NL77436C (it) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2732436A (en) * | 1947-12-22 | 1956-01-24 | Frequency in cycles per second | |
| US2863951A (en) * | 1954-12-24 | 1958-12-09 | Int Standard Electric Corp | Combined telephone ringing and induction coil arrangement |
| BE545243A (it) * | 1955-02-17 | |||
| US3126452A (en) * | 1960-03-18 | 1964-03-24 | Arrangement in telephone instruments | |
| US3517138A (en) * | 1967-09-25 | 1970-06-23 | Automatic Elect Lab | Long loop anti-side-tone telephone circuit |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2417067A (en) * | 1947-03-11 | Telephone substation circuit | ||
| US980613A (en) * | 1909-07-31 | 1911-01-03 | Dean Electric Co | Telephone system. |
| US1162069A (en) * | 1915-05-10 | 1915-11-30 | Western Electric Co | Telephone system. |
| US1452277A (en) * | 1917-10-08 | 1923-04-17 | Western Electric Co | Telephone substation set |
| US1484396A (en) * | 1920-12-22 | 1924-02-19 | Western Electric Co | Telephone system |
| NL21064C (it) * | 1925-10-23 | |||
| US1732135A (en) * | 1925-12-05 | 1929-10-15 | John H Mason | Substation system |
| US1896196A (en) * | 1931-02-05 | 1933-02-07 | American Telephone & Telegraph | Telephone substation apparatus |
| US2134691A (en) * | 1937-07-13 | 1938-11-01 | Harry R Allensworth | Electric communication network |
| US2452239A (en) * | 1946-04-15 | 1948-10-26 | Lorain Prod Corp | Telephone circuit |
| GB627389A (en) * | 1947-09-09 | 1949-08-08 | Leyland And Birmingham Rubber | Improvements relating to waders |
-
0
- BE BE483204D patent/BE483204A/xx unknown
- NL NL77436D patent/NL77436C/xx active
-
1947
- 1947-06-14 CH CH269349D patent/CH269349A/de unknown
-
1948
- 1948-02-26 CH CH274444D patent/CH274444A/de unknown
- 1948-03-03 CH CH273878D patent/CH273878A/de unknown
- 1948-05-28 CH CH272996D patent/CH272996A/de unknown
- 1948-06-14 FR FR1014029D patent/FR1014029A/fr not_active Expired
- 1948-06-17 US US33524A patent/US2643300A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH272996A (de) | 1951-01-15 |
| CH273878A (de) | 1951-02-28 |
| BE483204A (it) | |
| CH269349A (de) | 1950-06-30 |
| FR1014029A (fr) | 1952-08-07 |
| CH274444A (de) | 1951-03-31 |
| US2643300A (en) | 1953-06-23 |