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Charles M. Riggle
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Acton, MA, US
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last 30 patents
Information
Patent Grant
System for selectively storing stripes of data in tracks of disks s...
Patent number
5,724,539
Issue date
Mar 3, 1998
Digital Equipment Corporation
Charles Michael Riggle
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for enhanced implementation of add-compare-select (ACS) func...
Patent number
5,377,133
Issue date
Dec 27, 1994
Digital Equipment Corporation
Charles M. Riggle
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multiple-disk storage system
Patent number
5,134,532
Issue date
Jul 28, 1992
Peter R. Svendsen
G11 - INFORMATION STORAGE
Information
Patent Grant
High efficiency disk format and synchronization system
Patent number
5,036,408
Issue date
Jul 30, 1991
Digital Equipment Corporation
Michael D. Leis
G11 - INFORMATION STORAGE
Information
Patent Grant
Integral balanced-moment head positioner
Patent number
5,016,131
Issue date
May 14, 1991
Digital Equipment Corporation
Charles M. Riggle
G11 - INFORMATION STORAGE
Information
Patent Grant
Data demodulation system
Patent number
4,968,985
Issue date
Nov 6, 1990
Digital Equipment Corporation
Charles M. Riggle
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic tachometer for disk drives
Patent number
4,622,516
Issue date
Nov 11, 1986
Digital Equipment Corporation
Patrick L. Hearn
G11 - INFORMATION STORAGE
Information
Patent Grant
Multiple error detecting and correcting system employing Reed-Solom...
Patent number
4,413,339
Issue date
Nov 1, 1983
Digital Equipment Corporation
Charles M. Riggle
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Disk housing for disk drive mass storage unit
Patent number
4,363,056
Issue date
Dec 7, 1982
Digital Equipment Corporation
Charles M. Riggle
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary actuator assembly for disk drive head positioner
Patent number
4,346,416
Issue date
Aug 24, 1982
Digital Equipment Corporation
Charles M. Riggle
G11 - INFORMATION STORAGE