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WALKER MAGNETICS GROUP, INC.
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WORCESTER, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Electrically switchable magnet system
Patent number
6,229,422
Issue date
May 8, 2001
Walker Magnetics Group, Inc.
Dominic F. Pignataro
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrically switchable magnet system
Patent number
6,002,317
Issue date
Dec 14, 1999
Walker Magnetics Group, Inc.
Dominic F. Pignataro
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Magnetic rail chuck
Patent number
5,270,678
Issue date
Dec 14, 1993
Walker Magnetics Group, Inc.
Jean-Michel Gambut
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Ultrasonic transducer assembly
Patent number
5,134,999
Issue date
Aug 4, 1992
Walker Magnetics Group, Inc.
Vladimir W. Osipov
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Eddy current separator
Patent number
5,080,234
Issue date
Jan 14, 1992
Walker Magnetics Group, Inc.
William H. Benson
B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information
Patent Grant
Body member positioner
Patent number
5,014,970
Issue date
May 14, 1991
Walker Magnetics Group, Inc.
Vladimir W. Osipov
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Thread wrapping apparatus
Patent number
4,807,430
Issue date
Feb 28, 1989
Walker Magnetics Group, Inc.
David W. Palmer
D02 - YARNS MECHANICAL FINISHING OF YARNS OR ROPES WARPING OR BEAMING
Information
Patent Grant
Magnetic chuck controller
Patent number
4,771,358
Issue date
Sep 13, 1988
Walker Magnetics Group, Inc.
Alan R. Millner
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ion nitriding power supply
Patent number
4,733,137
Issue date
Mar 22, 1988
Walker Magnetics Group, Inc.
Richard M. Dunham
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Magnetic chuck
Patent number
4,663,602
Issue date
May 5, 1987
Walker Magnetics Group, Inc.
Dominic F. Pignataro
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Chuck control for a workpiece holding electromagnet
Patent number
4,633,361
Issue date
Dec 30, 1986
Walker Magnetics Group, Inc.
Roger B. Ela
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Lifting magnet system
Patent number
4,600,964
Issue date
Jul 15, 1986
Walker Magnetics Group, Inc.
Roger B. Ela
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Load tilting magnetic lift
Patent number
4,044,894
Issue date
Aug 30, 1977
Walker Magnetics Group, Inc.
Donald C. McDonald
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Method of fabricating a magnetic chuck
Patent number
4,023,267
Issue date
May 17, 1977
Walker Magnetics Group, Inc.
Dominic Francis Pignataro
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Integrating fluxmeter with input current compensation to cancel drift
Patent number
3,978,399
Issue date
Aug 31, 1976
Walker Magnetics Group, Inc.
Thomas G. Chadbourne
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
87110466 - BUX
Serial number
87110466
Registration number
5175331
Filing date
Jul 20, 2016
WALKER MAGNETICS GROUP, INC.
7 - Machines and machine tools
Information
Trademark
77866660 - WALKER
Serial number
77866660
Registration number
3817181
Filing date
Nov 6, 2009
Walker Magnetics Group Inc
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74353356 - SAHARA
Serial number
74353356
Registration number
2008809
Filing date
Jan 28, 1993
WALKER MAGNETICS GROUP, INC.
10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth
Information
Trademark
74352776 - SMART MAGNET
Serial number
74352776
Filing date
Jan 27, 1993
WALKER MAGNETICS GROUP, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74069844 - BLUE CHIP CHUCKS
Serial number
74069844
Registration number
1704543
Filing date
Jun 18, 1990
WALKER MAGNETICS GROUP, INC.
7 - Machines and machine tools
Information
Trademark
73712846 - UBA
Serial number
73712846
Registration number
1529557
Filing date
Feb 22, 1988
WALKER MAGNETICS GROUP, INC.
10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth