PERSCI, INC.

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MARINA DEL REY, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Processing read-back signals in magnetic disk systems
- Patent number 4,306,257
- Issue date Dec 15, 1981
- PerSci, Inc.
- Jefferson H. Harman
- G11 - INFORMATION STORAGE
Information Patent Grant
Guard band control for magnetic disks
- Patent number 4,300,174
- Issue date Nov 10, 1981
- PerSci, Inc.
- Jefferson H. Harman
- G11 - INFORMATION STORAGE
Information Patent Grant
Position control in disk drive system
- Patent number 4,270,073
- Issue date May 26, 1981
- PerSci, Inc.
- Jefferson H. Harman
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual magnetic head mounting and loading
- Patent number 4,209,813
- Issue date Jun 24, 1980
- PerSci, Inc.
- Philip S. Bryer
- G11 - INFORMATION STORAGE
Information Patent Grant
Positioner cone for flexible disks
- Patent number 4,208,682
- Issue date Jun 17, 1980
- PerSci, Inc.
- Philip S. Bryer
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc file system with improved seek control
- Patent number 4,125,882
- Issue date Nov 14, 1978
- PerSci, Inc.
- Robert W. Erickson
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk positioning and ejection device in a disk drive
- Patent number 4,040,107
- Issue date Aug 2, 1977
- PerSci, Inc.
- Philip Stuart Bryer
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73120693 - PERSCI
- Serial number 73120693
- Registration number 1132590
- Filing date Mar 28, 1977
- PERSCI, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73120726 - PERSCI
- Serial number 73120726
- Registration number 1105519
- Filing date Mar 28, 1977
- PERSCI, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments