DS

Douglas A. Schaffer

KR Kroy: 3 patents #4 of 29Top 15%
Overall (All Time): #1,676,118 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4678353 Tape supply cartridge Michael M. Richardson 1987-07-07
4624590 Lettering apparatus Michael M. Richardson, Ronald Tuckner 1986-11-25
4557617 Tape supply cartridge Michael M. Richardson 1985-12-10