Leonard J. Rigbey

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Winchester, GB

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Patents Grantslast 30 patents

Information Patent Grant
Flexible record disk signal storage apparatus
- Patent number 4,167,269
- Issue date Sep 11, 1979
- International Business Machines Corporation
- Michael R. Hatchett
- G11 - INFORMATION STORAGE
Information Patent Grant
Record disk cartridge
- Patent number 4,131,199
- Issue date Dec 26, 1978
- International Business Machines Corporation
- Michael R. Hatchett
- G11 - INFORMATION STORAGE