Servalyt Trademarks

SERVALYT
POLYAMPHOLYTE FOR ISOELECTRIC FOCUSSING ON AN INDICATED PH RANGE
Expired  ·  October 20, 1976  ·  73103935  · 
SERVALYT PRECOTES
Polyester Sheets for Isoelectric Focusing Coated with an Insoluble Moist Layer of Agarose or Polyamide Gel Containing Polyampholytes
Cancelled  ·  June 2, 1980  ·  73264686  ·