SE407297B - Tangentbord utan kontakter - Google Patents
Tangentbord utan kontakterInfo
- Publication number
- SE407297B SE407297B SE7501814A SE7501814A SE407297B SE 407297 B SE407297 B SE 407297B SE 7501814 A SE7501814 A SE 7501814A SE 7501814 A SE7501814 A SE 7501814A SE 407297 B SE407297 B SE 407297B
- Authority
- SE
- Sweden
- Prior art keywords
- keyboard
- contacts
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
- H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
- H03K2017/9706—Inductive element
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742408000 DE2408000C2 (de) | 1974-02-20 | Kontaktlose Tastatur |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7501814L SE7501814L (enrdf_load_html_response) | 1975-08-21 |
SE407297B true SE407297B (sv) | 1979-03-19 |
Family
ID=5907865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7501814A SE407297B (sv) | 1974-02-20 | 1975-02-18 | Tangentbord utan kontakter |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH579799A5 (enrdf_load_html_response) |
IT (1) | IT1029767B (enrdf_load_html_response) |
SE (1) | SE407297B (enrdf_load_html_response) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4398180A (en) | 1980-06-26 | 1983-08-09 | International Standard Electric Corporation | Contactless keyboard |
-
1975
- 1975-01-21 CH CH70275A patent/CH579799A5/xx not_active IP Right Cessation
- 1975-02-18 IT IT4822075A patent/IT1029767B/it active
- 1975-02-18 SE SE7501814A patent/SE407297B/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH579799A5 (enrdf_load_html_response) | 1976-09-15 |
IT1029767B (it) | 1979-03-20 |
DE2408000B1 (de) | 1975-07-24 |
SE7501814L (enrdf_load_html_response) | 1975-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7501814-3 Effective date: 19940910 Format of ref document f/p: F |