RH

Richard M. Heffner

AM Amp: 2 patents #506 of 1,260Top 45%
Overall (All Time): #1,633,876 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D410413 Zipper clasp Albert Pace 1999-06-01
4554725 Modular lead maker William R. Over, Donald A. Wion 1985-11-26
4489476 Modular lead maker William R. Over, Donald A. Wion 1984-12-25