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Patents Grantslast 30 patents

Information Patent Grant
Electrostatic acoustic converter
- Patent number 4,383,139
- Issue date May 10, 1983
- Bulgarsko Radio
- Peter K. Kanchev
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Compensator for horizontal angular error of a record-player arm
- Patent number 4,346,466
- Issue date Aug 24, 1982
- Bulgarsko Radio
- Peter K. Kanchev
- G11 - INFORMATION STORAGE
Information Patent Grant
Compensator for the horizontal angular error of a record player arm
- Patent number 4,316,280
- Issue date Feb 16, 1982
- Bulgarsko Radio
- Peter K. Kanchev
- G11 - INFORMATION STORAGE

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