NL6814198A - - Google Patents
Info
- Publication number
- NL6814198A NL6814198A NL6814198A NL6814198A NL6814198A NL 6814198 A NL6814198 A NL 6814198A NL 6814198 A NL6814198 A NL 6814198A NL 6814198 A NL6814198 A NL 6814198A NL 6814198 A NL6814198 A NL 6814198A
- Authority
- NL
- Netherlands
Links
Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2189267 | 1967-10-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL6814198A true NL6814198A (nl) | 1969-04-25 |
NL165629B NL165629B (nl) | 1980-11-17 |
NL165629C NL165629C (nl) | 1981-04-15 |
Family
ID=11188302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL6814198.A NL165629C (nl) | 1967-10-23 | 1968-10-03 | Telefoontoestel. |
Country Status (2)
Country | Link |
---|---|
US (1) | US3548111A (nl) |
NL (1) | NL165629C (nl) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS495644B1 (nl) * | 1970-02-07 | 1974-02-08 | ||
JPS4946485B1 (nl) * | 1970-09-30 | 1974-12-10 | ||
US5249225A (en) * | 1991-10-25 | 1993-09-28 | Coherent Communications Systems Corp. | Self-balancing hybrid using digitally programmable attenuator for variable impedance elements |
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1968
- 1968-10-03 NL NL6814198.A patent/NL165629C/nl not_active IP Right Cessation
- 1968-10-22 US US769490A patent/US3548111A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL165629B (nl) | 1980-11-17 |
NL165629C (nl) | 1981-04-15 |
DE1804745A1 (de) | 1969-06-04 |
DE1804745B2 (de) | 1971-07-08 |
US3548111A (en) | 1970-12-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
V1 | Lapsed because of non-payment of the annual fee |