Bonnie I. Nelson

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Mentor, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Treating agent for liquid media
- Patent number 4,816,177
- Issue date Mar 28, 1989
- Eltech Systems Corporation
- Bonnie I. Nelson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Feeder device and method for adding solid material to a liquid of v...
- Patent number 4,759,907
- Issue date Jul 26, 1988
- Eltech Systems Corporation
- Richard J. Kawolics
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Feeder assembly for adding dissolvable agent to a flowing liquid
- Patent number 4,732,689
- Issue date Mar 22, 1988
- Eltech Systems Corporation
- Donald J. Harvey
- G05 - CONTROLLING REGULATING