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Roberta Barkley

North Barrington, IL: #1 of 3 inventorsTop 35%

Illinois: #802 of 3,813 inventorsTop 25%

Overall (1989): #64,695 of 140,708Top 50%

1 Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4808997	Photoelectric vehicle position indicating device for use in parking and otherwise positioning vehicles	George J. Barkley	1989-02-28