DH

Donald E. Hallam

EA E.I. Du Pont De Nemours And: 4 patents #1,770 of 8,010Top 25%
📍 Wilmington, DE: #1,052 of 3,182 inventorsTop 35%
🗺 Delaware: #2,150 of 7,163 inventorsTop 35%
Overall (All Time): #1,299,625 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5012636 Apparatus and process for forming alternate twist plied yarn and product therefrom Peter Popper, Harold F. Staunton, Paul W. Yngve 1991-05-07
5003763 Apparatus and process for forming alternate twist plied yarn and product therefrom Peter Popper, Harold F. Staunton, Robert Edward Taylor, Paul W. Yngve 1991-04-02
4873821 Apparatus and process for forming alternate twist plied yarn Peter Popper, Harold F. Staunton, Robert Edward Taylor, Paul W. Yngve 1989-10-17
4555067 Textile doff servant Richard J. Angelucci, Andrew P. Cope, Harry E. Ladd 1985-11-26