JH

John L. Hierbaum

MC Mine Safety Appliances Company: 1 patents #104 of 243Top 45%
📍 Murrysville, PA: #353 of 521 inventorsTop 70%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,429,029 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7110743 Communications device for a protective helmet Larry Depew, Joseph Birli, Lou Monaco, Greg Skillicom, Dan Zimet +4 more 2006-09-19