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| Number | Title | Issue Date |
| 4771350 | Magnetic reading/writing transducer for perpendicular recording A magnetic transducer for writing and reading data on a perpendicular recording carrier such as a magnetic disk includes a writing pole (MPOLI1) perpendicular to the recording carrier and a coil (BOBI1) magnetically coupled to a writ... | 09/13/1988 |
| 4714828 | Optoelectric transducer An optoelectronic transducer is proposed which includes a PIN diode (2) that delivers a current that is proportional to a light signal that is received. The diode is connected to the input of an inverting amplifier (4) that delivers a voltage signal v | 12/22/1987 |
