Donald E. Griffiths

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Fluidic transducer access opening in a stack of flexible record disks
- Patent number 4,019,204
- Issue date Apr 19, 1977
- International Business Machines Corporation
- Donald Eric Griffiths
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic storage apparatus employing flexible record disks with per...
- Patent number 3,974,524
- Issue date Aug 10, 1976
- International Business Machines Corporation
- Donald E. Griffiths
- G11 - INFORMATION STORAGE
Information Patent Grant
Spacer supports for flexible disk structures
- Patent number 3,969,767
- Issue date Jul 13, 1976
- International Business Machines Corporation
- Donald E. Griffiths
- G11 - INFORMATION STORAGE
Information Patent Grant
Stacked flexible record disk storage apparatus having enhanced disk...
- Patent number 3,940,794
- Issue date Feb 24, 1976
- International Business Machines Corporation
- Donald E. Griffiths
- G11 - INFORMATION STORAGE
Information Patent Grant
Flexible disk storage apparatus having disks of various radii for e...
- Patent number 3,931,645
- Issue date Jan 6, 1976
- International Business Machines Corporation
- Paul D. Dodd
- G11 - INFORMATION STORAGE