NL68221C - - Google Patents
Info
- Publication number
- NL68221C NL68221C NL68221DA NL68221C NL 68221 C NL68221 C NL 68221C NL 68221D A NL68221D A NL 68221DA NL 68221 C NL68221 C NL 68221C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/16—Wiring arrangements for selector switches or relays in frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H63/00—Details of electrically-operated selector switches
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US348223A US2415437A (en) | 1940-07-29 | 1940-07-29 | Telephone exchange apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL68221C true NL68221C (it) |
Family
ID=23367106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL68221D NL68221C (it) | 1940-07-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2415437A (it) |
| BE (1) | BE468622A (it) |
| CH (1) | CH280333A (it) |
| FR (1) | FR934845A (it) |
| NL (1) | NL68221C (it) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573889A (en) * | 1948-12-14 | 1951-11-06 | Hans P Boswau | Automatic telephone switching mechanism |
| US2742535A (en) * | 1951-05-15 | 1956-04-17 | North Electric Co | Automatic telephone system |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1480202A (en) * | 1924-01-08 | Telephone system | ||
| US1374366A (en) * | 1921-04-12 | dickerson | ||
| US701499A (en) * | 1900-08-27 | 1902-06-03 | Anderson John | Automatic telephone-exchange. |
| US767703A (en) * | 1904-01-18 | 1904-08-16 | Phoenix Electric Mfg Company | Automatic electrical regulator. |
| US1046952A (en) * | 1909-12-21 | 1912-12-10 | Ernst Blos | Automatic telephone system. |
| US1215859A (en) * | 1916-05-22 | 1917-02-13 | Western Electric Co | Switch mechanism. |
| US1318178A (en) * | 1916-10-25 | 1919-10-07 | Philip W Goewey | Circuit-controller. |
| US1275846A (en) * | 1917-12-14 | 1918-08-13 | Gen Electric | Switch structure. |
| US1528767A (en) * | 1922-04-27 | 1925-03-10 | Western Electric Co | Switching device |
| US1472503A (en) * | 1922-06-20 | 1923-10-30 | Western Electric Co | Switching device |
| US1659627A (en) * | 1925-10-12 | 1928-02-21 | Ericsson Telefon Ab L M | Selector switch |
| US1819675A (en) * | 1929-05-04 | 1931-08-18 | Bell Telephone Labor Inc | Switch |
| US2123229A (en) * | 1937-03-31 | 1938-07-12 | Bell Telephone Labor Inc | Selector switch |
| US2214907A (en) * | 1938-12-30 | 1940-09-17 | Associated Electric Lab Inc | Switching apparatus |
| US2187115A (en) * | 1939-03-02 | 1940-01-16 | Bell Telephone Labor Inc | Switching device |
-
0
- BE BE468622D patent/BE468622A/xx unknown
- NL NL68221D patent/NL68221C/xx active
-
1940
- 1940-07-29 US US348223A patent/US2415437A/en not_active Expired - Lifetime
-
1946
- 1946-10-08 CH CH280333D patent/CH280333A/de unknown
- 1946-10-15 FR FR934845D patent/FR934845A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE468622A (it) | |
| US2415437A (en) | 1947-02-11 |
| FR934845A (fr) | 1948-06-02 |
| CH280333A (de) | 1952-01-15 |