James D. Knudsen

Follow

Person

St. Louis, MO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Machine and process for producing inserts having folded pull tabs
- Patent number 4,526,562
- Issue date Jul 2, 1985
- David S. Knudsen
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...