D. Franklin Howeth

📍 Fort Worth, TX: #5 of 83 inventorsTop 7%

🗺 Texas: #331 of 4,134 inventorsTop 9%

Overall (1989): #29,756 of 140,708Top 25%

Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4823731	Multiple filter/cyclone air filtration apparatus with single, movable filter cleaning system	—	1989-04-25
4802983	Hopper loading directly insertable horizontally mounted cylindrical segmented bore pleated filter system for rotary broom sweepers	—	1989-02-07