NL60302C - - Google Patents
Info
- Publication number
- NL60302C NL60302C NL60302DA NL60302C NL 60302 C NL60302 C NL 60302C NL 60302D A NL60302D A NL 60302DA NL 60302 C NL60302 C NL 60302C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24308/37A GB502143A (en) | 1937-09-06 | 1937-09-06 | Improvements in and relating to electrical testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL60302C true NL60302C (en:Method) |
Family
ID=10209640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL60302D NL60302C (en:Method) | 1937-09-06 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2207513A (en:Method) |
| GB (1) | GB502143A (en:Method) |
| NL (1) | NL60302C (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2432944A (en) * | 1943-08-28 | 1947-12-16 | Western Electric Co | Oscillograph system for testing electrical contact making devices |
| US2498669A (en) * | 1944-09-29 | 1950-02-28 | Fed Telephone & Radio Corp | Impulse transmitter test instrument |
| US2416102A (en) * | 1945-01-08 | 1947-02-18 | Automatic Elect Lab | Impulse testing apparatus |
| US2486172A (en) * | 1945-01-08 | 1949-10-25 | Automatic Elect Lab | Impulse testing apparatus |
| US2428488A (en) * | 1945-01-08 | 1947-10-07 | Automatic Elect Lab | Impulse testing apparatus |
| US2535118A (en) * | 1947-02-14 | 1950-12-26 | North Electric Mfg Company | Telephone dial testing by means of an oscilloscope pattern |
| US2617896A (en) * | 1947-09-17 | 1952-11-11 | Automatic Elect Lab | Test board for telephone systems |
-
0
- NL NL60302D patent/NL60302C/xx active
-
1937
- 1937-09-06 GB GB24308/37A patent/GB502143A/en not_active Expired
-
1938
- 1938-08-29 US US227443A patent/US2207513A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB502143A (en) | 1939-03-06 |
| US2207513A (en) | 1940-07-09 |