Ronald B. Fletcher

Follow

Person

Calgary, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Process for pelletizing a sulphur-bentonite clay mixture and the pr...
- Patent number 4,133,669
- Issue date Jan 9, 1979
- Agri-Prassco Joint Venture
- Bob L. Caldwell
- C05 - FERTILISERS MANUFACTURE THEREOF