HK

Harold E. Koeln

Overall (All Time): #1,674,369 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4786197 Twist actuated writing instrument Michael Theodore Lembeck 1988-11-22
4257713 Conical pen Alan Sherman 1981-03-24
4217712 Conical pen 1980-08-19