FP

Frank E. Platko

PC Propper Manufacturing Co.: 3 patents #7 of 21Top 35%
Overall (All Time): #1,631,878 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
RE36062 Steam sterilization indicator Irving A. Speelman, Kenneth A. Summer, Seymour Schuman 1999-01-26
D347585 Steam sterilization monitor Ken Summer, Peter Hunsinger, Irving A. Speelman 1994-06-07
5158363 Steam sterilization indicator Irving A. Speelman, Ken Summer 1992-10-27