L. Steven Porter

PM Parker Manufacturing: 1 patents #6 of 12Top 50%

📍 Shrewsbury, MA: #619 of 938 inventorsTop 70%

🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%

Overall (All Time): #4,095,905 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4286904	Wood bit	Raymond A. Stockley	1981-09-01