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Bruce Knieriem
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Wausau, WI, US
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Patents Grants
last 30 patents
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Patent Grant
Variable-volume exhaust system
Patent number
10,029,289
Issue date
Jul 24, 2018
Greenheck Fan Corporation
Ronald L. Wendorski
B08 - CLEANING
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Patent Grant
Direct gas-fired heating and ventilation system with passive contro...
Patent number
5,915,960
Issue date
Jun 29, 1999
Greenheck Fan Corporation
Chris B. Check
F24 - HEATING RANGES VENTILATING
Patents Applications
last 30 patents
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Patent Application
VARIABLE-VOLUME EXHAUST SYSTEM
Publication number
20120322358
Publication date
Dec 20, 2012
Ronald L. Wendorski
B08 - CLEANING