NL7102869A - - Google Patents
Info
- Publication number
- NL7102869A NL7102869A NL7102869A NL7102869A NL7102869A NL 7102869 A NL7102869 A NL 7102869A NL 7102869 A NL7102869 A NL 7102869A NL 7102869 A NL7102869 A NL 7102869A NL 7102869 A NL7102869 A NL 7102869A
- 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
- 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)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7008176A FR2082216A5 (xx) | 1970-03-06 | 1970-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7102869A true NL7102869A (xx) | 1971-09-08 |
Family
ID=9051856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7102869A NL7102869A (xx) | 1970-03-06 | 1971-03-04 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE763347A (xx) |
| CH (1) | CH532347A (xx) |
| DE (1) | DE2110655A1 (xx) |
| FR (1) | FR2082216A5 (xx) |
| GB (1) | GB1317844A (xx) |
| NL (1) | NL7102869A (xx) |
| SE (1) | SE363561B (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141560A (en) * | 1989-12-01 | 1992-08-25 | National Research Development Corporation | Dental cement |
-
1970
- 1970-03-06 FR FR7008176A patent/FR2082216A5/fr not_active Expired
-
1971
- 1971-02-23 CH CH256471A patent/CH532347A/fr not_active IP Right Cessation
- 1971-02-24 BE BE763347A patent/BE763347A/xx unknown
- 1971-03-04 NL NL7102869A patent/NL7102869A/xx unknown
- 1971-03-05 DE DE19712110655 patent/DE2110655A1/de active Pending
- 1971-03-05 SE SE284071A patent/SE363561B/xx unknown
- 1971-04-19 GB GB2335971A patent/GB1317844A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE363561B (xx) | 1974-01-21 |
| GB1317844A (en) | 1973-05-23 |
| FR2082216A5 (xx) | 1971-12-10 |
| CH532347A (fr) | 1972-12-31 |
| DE2110655A1 (de) | 1971-09-16 |
| BE763347A (fr) | 1971-08-24 |