Wilbur A. Spraker, Jr.

HM Household Manufacturing: 1 patents #1 of 2Top 50%

📍 Martinsville, IN: #1 of 8 inventorsTop 15%

🗺 Indiana: #304 of 1,469 inventorsTop 25%

Overall (1989): #43,103 of 140,708Top 35%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4840036	Air cycle refrigeration system	—	1989-06-20