David Charles William Richards

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Stockbridge, GB

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Patents Grantslast 30 patents

Information Patent Grant
Digital filters
- Patent number 6,581,080
- Issue date Jun 17, 2003
- Sony United Kingdom Limited
- David Richards
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital filter
- Patent number 6,405,230
- Issue date Jun 11, 2002
- Sony United Kingdom Limited
- David Charles William Richards
- H03 - BASIC ELECTRONIC CIRCUITRY