Louis D. Keller

📍 Hillsdale, MI: #17 of 53 inventorsTop 35%

🗺 Michigan: #27,158 of 86,293 inventorsTop 35%

Overall (All Time): #1,635,415 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5954264	Rural mailbox with remote door opener	—	1999-09-21
5509681	Kit and method for converting a wheelbarrow into a garden cart	—	1996-04-23
4346529	Advertising display for pick-up trucks or similar vehicles	—	1982-08-31