Stephen E. Marshall

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Snyder, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Chemical injection system
- Patent number 6,208,913
- Issue date Mar 27, 2001
- YZ Systems, Inc.
- Stephen E. Marshall
- G05 - CONTROLLING REGULATING
Information Patent Grant
Apparatus for determining odor levels in gas streams
- Patent number 6,196,051
- Issue date Mar 6, 2001
- YZ Systems, Inc.
- Stephen Edward Marshall
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for determining odor levels in gas streams
- Patent number 5,996,396
- Issue date Dec 7, 1999
- Y-Z Industries Sales, Inc.
- Stephen Edward Marshall
- G01 - MEASURING TESTING
Information Patent Grant
Chemical injection system
- Patent number 5,406,970
- Issue date Apr 18, 1995
- Y-Z Industries Inc.
- Stephen E. Marshall
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
Chemical injection system
- Publication number 20010014840
- Publication date Aug 16, 2001
- Stephen E. Marshall
- G05 - CONTROLLING REGULATING
Information Patent Application
Apparatus for determining odor levels in gas streams
- Publication number 20010011473
- Publication date Aug 9, 2001
- Stephen Edward Marshall
- G01 - MEASURING TESTING