Mark R. Hoffman

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Lake Forest, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
High voltage digital voltmeter and wireless phaser
- Patent number 9,658,265
- Issue date May 23, 2017
- HD Electric Company
- Mark R. Hoffman
- G01 - MEASURING TESTING
Information Patent Grant
Lightning and surge arrester test apparatus and method
- Patent number 6,124,714
- Issue date Sep 26, 2000
- HD Electric Company
- William J. McNulty
- G01 - MEASURING TESTING
Information Patent Grant
Tester for high voltage measuring apparatus
- Patent number 5,291,124
- Issue date Mar 1, 1994
- HD Electric Company
- Mark R. Hoffman
- G01 - MEASURING TESTING
Information Patent Grant
Hanging ammeter with removable battery cartridge
- Patent number 5,130,642
- Issue date Jul 14, 1992
- HD Electric Company
- Mark R. Hoffman
- G01 - MEASURING TESTING
Information Patent Grant
Jacket for cable connector
- Patent number 5,017,739
- Issue date May 21, 1991
- HD Electric Company
- Mark R. Hoffman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
HIGH VOLTAGE DIGITAL VOLTMETER AND WIRELESS PHASER
- Publication number 20160041208
- Publication date Feb 11, 2016
- HD Electric Company
- Mark R. Hoffman
- G01 - MEASURING TESTING