JH

John A. Helmsderfer

📍 East Liverpool, OH: #1 of 2 inventorsTop 50%
🗺 Ohio: #68 of 4,576 inventorsTop 2%
Overall (1997): #2,591 of 185,788Top 2%
6
Patents 1997

Issued Patents 1997

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5701929 Cover assembly having rapid installation features for covering undersink piping 1997-12-30
5699828 Cover assembly with integral measurement indicia for covering undersink piping 1997-12-23
5685328 Cover assembly and method for covering undersink piping 1997-11-11
5678598 Cover assembly and method for covering undersink piping 1997-10-21
5649566 Cover assembly and method for covering undersink piping 1997-07-22
D378966 Platform for a baby diaper changing station 1997-04-29