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Beverly Matthews
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White Hall, MD, US
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last 30 patents
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Patent Grant
Transmission for power tool with variable speed ratio
Patent number
8,887,831
Issue date
Nov 18, 2014
Black & Decker Inc.
Qiang J. Zhang
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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Patent Application
Transmission for Power Tool with Variable Speed Ratio
Publication number
20130126201
Publication date
May 23, 2013
Black & Decker Inc.
Qiang J. Zhang
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS