David C. Graves

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic cartridge feeder with priority slot
- Patent number 6,259,578
- Issue date Jul 10, 2001
- International Business Machines Corporation
- Dale Allen Christiansen
- G11 - INFORMATION STORAGE
Information Patent Grant
Data cartridge magazine with interface to automatic cartridge acces...
- Patent number 5,659,440
- Issue date Aug 19, 1997
- International Business Machines Corporation
- Donald Charles Acosta
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo and data format for magnetic tape having plural spaced-apart...
- Patent number 5,432,652
- Issue date Jul 11, 1995
- International Business Machines Corporation
- Wayne T. Comeaux
- G11 - INFORMATION STORAGE
Information Patent Grant
Detecting a servo error on a magnetic tape and identifying extent a...
- Patent number 5,394,280
- Issue date Feb 28, 1995
- International Business Machines Corporation
- Alex Chliwnyj
- G11 - INFORMATION STORAGE
Information Patent Grant
Rewritable media protectable as written-once-only media and system...
- Patent number 5,265,082
- Issue date Nov 23, 1993
- International Business Machines Corporation
- John J. Gniewek
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive equalization circuit for magnetic recording channels utili...
- Patent number 4,580,176
- Issue date Apr 1, 1986
- International Business Machines Corporation
- David C. Graves
- G11 - INFORMATION STORAGE