SF

Siegfried Frei

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #527,497 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5411396 Method of and implement for extraction of dental prostheses 1995-05-02
4696253 Apparatus for applying a strip-shaped powder layer onto a weld seam of containers Ernst Hohl 1987-09-29
4661379 Method and apparatus for applying strip-shaped powder layer to a can body or the like, and powder-carrying can body Ernst Hohl 1987-04-28
4635841 Method for bringing together the edges of a blank of sheet metal rolled to a cylinder as well as a guide apparatus for performing the method 1987-01-13
4588605 Method of and arrangement for applying a strip-shaped powder layer on a weld seam of containers, and a container Ernst Hohl 1986-05-13
4538439 Cans formed of thin-walled material and apparatus for forming precise fine beads therein 1985-09-03
4512490 Strengthened can bodies of thin-walled metal Jakob Koch 1985-04-23
4487048 Method and apparatus for beading the bodies of sheet metal cans 1984-12-11
4389964 Apparatus for applying a protective coating to the seam of welded can sleeves 1983-06-28
4249476 Apparatus for applying a protective coating to the welded seam of a can body or the like Paul Opprecht 1981-02-10