Donald J. MacKay

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Patents Grantslast 30 patents

Information Patent Grant
Rotary agitator
- Patent number 5,061,080
- Issue date Oct 29, 1991
- Roberts Filter Manufacturing Company
- Donald J. MacKay
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for treating and disposing of wastewater
- Publication number 20130206696
- Publication date Aug 15, 2013
- R. Lee Roberts
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter system for filtering water or wastewater and a method of ope...
- Publication number 20070210017
- Publication date Sep 13, 2007
- Donald John Mackay
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL