Richard J. Ryan

Follow

Person

Rockford, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Diffuser for aeration basin
- Patent number 4,981,623
- Issue date Jan 1, 1991
- AquaTec, Inc.
- Richard J. Ryan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE