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Edwin Gray Patents

"I think we should post the two Gray patents to provide a firm foundation for this project as it may develop into a project for a motor suitable for an electric vehicle as Gray intended. Both these patents are expired, but they are often referred to in my work." -- G.M.

• US Patent 3,890,548 Edwin Gray "Pulsed Capacitor Discharge Electric Engine"
• US Patent 4,595,975 Edwin Gray "Efficient Power Supply Suitable for Inductive Loads"
• #4,661,747 - April 28, 1987, Efficient Electrical Conversion Switching Tube Suitable For Inductive Loads (Click here to read the patent)

Index created by Sterling D. Allan, May 28, 2004
Last updated May 28, 2004

ADVISORY: With any technology, you take a high risk to invest significant time or money unless (1) independent testing has thoroughly corroborated the technology, (2) the group involved has intellectual rights to the technology, and (3) the group has the ability to make a success of the endeavor.

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