Frederick Alexander

📍 Chicago, IL: #3,073 of 13,327 inventorsTop 25%

🗺 Illinois: #21,447 of 84,256 inventorsTop 30%

Overall (All Time): #1,181,937 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
9886837	Personal alarm system	—	2018-02-06
D674595	Painter's cup	—	2013-01-22
5060585	Agricultural seed planter	—	1991-10-29
4733824	Particulate material distributor, having a tensioned flexible cover for clean-out aperture below hopper	—	1988-03-29