Donald M. Michalchuk

Follow

Person

Yorkton, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Cultivator sweep with pair of rearwardly extending downturned rigid...
- Patent number 4,850,435
- Issue date Jul 25, 1989
- Morris Rob-Weeder Company, Ltd.
- George H. Morris
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING