Philip C. Rolffs

📍 Portage, MI: #249 of 619 inventorsTop 45%

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

Overall (All Time): #1,668,814 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4959076	Synthetic rosewood and method of production thereof	—	1990-09-25
4840637	Synthetic ebony and method of producing the same (I)	—	1989-06-20
4840638	Synthetic ebony and method of producing the same (II)	—	1989-06-20