Calvin M. Mayer

📍 Casselton, ND: #4 of 8 inventorsTop 50%

🗺 North Dakota: #1,185 of 2,395 inventorsTop 50%

Overall (All Time): #3,725,224 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5669505	Disposable serving tray	—	1997-09-23