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Donald A. Hadfield

Pietermaritzburg, ZA: #1 of 3 inventorsTop 35%

Overall (1989): #119,603 of 140,708Top 90%

1 Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4810219	Life saving device	Malcom D. Anderson	1989-03-07