US2382893A - Telephone system - Google Patents
Telephone system Download PDFInfo
- Publication number
- US2382893A US2382893A US550070A US55007044A US2382893A US 2382893 A US2382893 A US 2382893A US 550070 A US550070 A US 550070A US 55007044 A US55007044 A US 55007044A US 2382893 A US2382893 A US 2382893A
- Authority
- US
- United States
- Prior art keywords
- aug
- telephone system
- sheet
- sheets
- mckim
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Paper (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550096A US2396797A (en) | 1944-08-18 | 1944-08-18 | Trouble lockout arrangement |
US550070A US2382893A (en) | 1944-08-18 | 1944-08-18 | Telephone system |
NL137339A NL72500C (es) | 1944-08-18 | 1947-12-22 | |
FR960189D FR960189A (es) | 1944-08-18 | 1948-01-27 | |
GB5091/48A GB654092A (en) | 1944-08-18 | 1948-02-20 | Improvements in or relating to telephone systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550070A US2382893A (en) | 1944-08-18 | 1944-08-18 | Telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
US2382893A true US2382893A (en) | 1945-08-14 |
Family
ID=24195617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US550070A Expired - Lifetime US2382893A (en) | 1944-08-18 | 1944-08-18 | Telephone system |
Country Status (4)
Country | Link |
---|---|
US (1) | US2382893A (es) |
FR (1) | FR960189A (es) |
GB (1) | GB654092A (es) |
NL (1) | NL72500C (es) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2550755A (en) * | 1947-09-24 | 1951-05-01 | Automatic Elect Lab | Toll switching telephone system |
US2633501A (en) * | 1946-03-09 | 1953-03-31 | Int Standard Electric Corp | Long distance telephone exchange system |
US2744965A (en) * | 1947-07-10 | 1956-05-08 | Automatic Elect Lab | Carrier type intertoll dialing telephone system |
-
1944
- 1944-08-18 US US550070A patent/US2382893A/en not_active Expired - Lifetime
-
1947
- 1947-12-22 NL NL137339A patent/NL72500C/xx active
-
1948
- 1948-01-27 FR FR960189D patent/FR960189A/fr not_active Expired
- 1948-02-20 GB GB5091/48A patent/GB654092A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2633501A (en) * | 1946-03-09 | 1953-03-31 | Int Standard Electric Corp | Long distance telephone exchange system |
US2744965A (en) * | 1947-07-10 | 1956-05-08 | Automatic Elect Lab | Carrier type intertoll dialing telephone system |
US2550755A (en) * | 1947-09-24 | 1951-05-01 | Automatic Elect Lab | Toll switching telephone system |
Also Published As
Publication number | Publication date |
---|---|
NL72500C (es) | 1953-06-15 |
GB654092A (en) | 1951-06-06 |
FR960189A (es) | 1950-04-14 |
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