| 526 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {8} |
| 72 | DF | .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43} |
| 274 | | .~.~ From monomer containing a phosphorus atom {3} |
| 275 | DF | .~.~.~> Phosphorus is part of a ring |
| 276 | DF | .~.~.~> Phosphorus is bonded to a nitrogen atom |
| 277 | DF | .~.~.~> Phosphorus atom is pentavalent {1} |