JZ

Joseph Z. Zdrok

AO American Optical: 4 patents #11 of 106Top 15%
CS Cabot Safety: 3 patents #5 of 19Top 30%
LG Louis M. Gerson: 1 patents #7 of 7Top 100%
📍 Webster, MA: #9 of 64 inventorsTop 15%
🗺 Massachusetts: #14,132 of 88,656 inventorsTop 20%
Overall (All Time): #590,406 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5794617 Face mask and retainer Robert A. Brunell 1998-08-18
5373869 Test probe for face piece respirators 1994-12-20
5299448 Positive pressure test apparatus for facepiece respirator Richard D. Maryyanek, Keith Simpson 1994-04-05
D340316 Test probe for facepiece respirators 1993-10-12
D287649 Disposable respirator Joseph Maisano, James J. Krusas 1987-01-06
D286213 Dual filter respirator Richard D. Maryyanek 1986-10-14
4600002 Disposable respirator Richard D. Maryyanek 1986-07-15
4592350 Respirator Richard D. Maryyanek 1986-06-03
D270957 Respirator Richard D. Maryyanek 1983-10-11