Donald J. Beyer

📍 Sterling, MA: #68 of 143 inventorsTop 50%

🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%

Overall (All Time): #2,198,594 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6581498	Device for removing the filter medium from the spool of an oil filter and method of use	—	2003-06-24
6517063	Holder for an oil filter	—	2003-02-11