Delmar R. Johnson

BH Bell And Howell: 3 patents #53 of 293Top 20%

📍 Barrington, IL: #239 of 767 inventorsTop 35%

🗺 Illinois: #26,653 of 84,256 inventorsTop 35%

Overall (All Time): #1,678,714 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4624558	Microimage recorder	—	1986-11-25
4324484	Microfilm filing system	—	1982-04-13
4198157	Automatic microfilm camera operated responsive to data input at a computer terminal	—	1980-04-15