Roger L. Posthumus

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Charlotte, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for decoding degraded data signals
- Patent number 5,379,037
- Issue date Jan 3, 1995
- International Business Machines Corporation
- Clarence Harrison
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for decoding two frequency (f/sf) data signals
- Patent number 5,298,897
- Issue date Mar 29, 1994
- International Business Machines Corporation
- Clarence Harrison
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for decoding two frequency (F/2F) data signals
- Patent number 5,168,275
- Issue date Dec 1, 1992
- International Business Machines Corporation
- Clarence Harrison
- G11 - INFORMATION STORAGE