WL

Walter H. Leistner

SM Sigma Tool & Machine: 4 patents #3 of 10Top 30%
Overall (All Time): #524,048 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6817079 Method of riveting a headed fastener Sung Hsiang Liu 2004-11-16
5909993 Chipped nail welded wire nailing strip and method 1999-06-08
5560099 Tee-nut setting and forming machine Volkmar W. Leistner 1996-10-01
5327645 Tee-nut fastener feed means for tee-nut fastener setting apparatus Keith Bromley 1994-07-12
5323531 Self-punching tee-nut insertion machine Keith Bromley 1994-06-28
5299686 Rolled strip of tee-nut fasteners for tee-nut fastener setting apparatus Keith Bromley 1994-04-05
5214843 Apparatus for applying tee-nut fasteners to workpieces Keith Bromley 1993-06-01
5143501 Grooved nail and strip Alfred S. Hertz 1992-09-01
4711980 Nail collator and welder 1987-12-08
4472956 Apparatus for feeding elongated objects 1984-09-25