US PATENT SUBCLASS 435 / FOR 223
.~.~ Plant cells (935/98)

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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

FOR 214  DD  HYBRID OR FUSED CELL TECHNOLOGY, E.G., HYBRIDOMA, ETC. (935/89) {4}
FOR 220  DD  .~ Fused or hybrid cell per se (935/95) {5}
FOR 223.~.~ Plant cells (935/98)