NL69491C - - Google Patents
Info
- Publication number
- NL69491C NL69491C NL69491DA NL69491C NL 69491 C NL69491 C NL 69491C NL 69491D A NL69491D A NL 69491DA NL 69491 C NL69491 C NL 69491C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
-
- 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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US577088XA | 1943-05-06 | 1943-05-06 | |
| US485827A US2354682A (en) | 1943-05-06 | 1943-05-06 | Electric selection controlling circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL69491C true NL69491C (xx) |
Family
ID=26736805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL69491D NL69491C (xx) | 1943-05-06 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2354682A (xx) |
| NL (1) | NL69491C (xx) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2832834A (en) * | 1941-04-26 | 1958-04-29 | Nederlanden Staat | Signalling arrangement for telecommunication systems |
| US2492135A (en) * | 1945-07-07 | 1949-12-27 | Int Standard Electric Corp | Potential matching electrical control system |
| US2576097A (en) * | 1945-07-23 | 1951-11-27 | Int Standard Electric Corp | Automatic telephone selective switching system |
| US2462074A (en) * | 1946-01-05 | 1949-02-22 | Int Standard Electric Corp | Biasing potential switching system |
| NL65863C (xx) * | 1946-01-30 | |||
| FR933606A (fr) * | 1946-08-27 | 1948-04-27 | Constr Telephoniques | Perfectionnements aux systèmes de téléphonie automatique |
| US2570214A (en) * | 1946-09-14 | 1951-10-09 | Int Standard Electric Corp | Second test circuit for selector wipers |
| US2559601A (en) * | 1946-11-13 | 1951-07-10 | Int Standard Electric Corp | Automatic selector control system |
| US2616980A (en) * | 1948-04-26 | 1952-11-04 | Hartford Nat Bank & Trust Co | Flip-flop circuit for operating a switch |
| US2654000A (en) * | 1948-05-20 | 1953-09-29 | Int Standard Electric Corp | Multipotential type register controller |
| US2676210A (en) * | 1948-08-11 | 1954-04-20 | Hartford Nat Bank & Trust Co | Potential comparing selector circuit |
| DE856459C (de) * | 1948-08-11 | 1952-11-20 | Philips Nv | Schaltungsanordnung fuer selbsttaetige Fernmeldeanlagen zur Einstellung eines Waehlers mittels einer Spannungsvergleichsmethode |
| US2647165A (en) * | 1948-09-13 | 1953-07-28 | Hartford Nat Bank & Trust Co | Apparatus for breaking contact resistance in a marker-controlled selector |
| NL146973B (nl) * | 1949-06-14 | Smit Nijmegen Electrotec | Voor het kiezen van grove spanningstrappen bestemde, stroomloos schakelbare, draaibare grofkiezer voor een regelschakelaar. | |
| NL179054B (nl) * | 1952-08-19 | Lummus Co | Werkwijze voor de omzetting van een alkylpiperidine tot een cyanopyridine. |
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0
- NL NL69491D patent/NL69491C/xx active
-
1943
- 1943-05-06 US US485827A patent/US2354682A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2354682A (en) | 1944-08-01 |