US PATENT SUBCLASS 260 / DIG 18
.~.~ High polymeric (resinous) antistatic agents containing pentavalent nitrogen

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260 /   HD   CHEMISTRY OF CARBON COMPOUNDS

DIG 15  DD  Antistatic agents not otherwise provided for {3}
DIG 17  DD  .~ High polymeric (resinous) antistatic agents {1}
DIG 18.~.~ High polymeric (resinous) antistatic agents containing pentavalent nitrogen