(under subclass 160) Subject matter wherein the carcass is that of a cold blooded aquatic vertebrate, the splitting device cutting along one or either side of the backbone through the ribs to separate the flanks.
(1) Note. Fish filleting as defined herein does not produce totally boneless pieces of fish since the tiny rib or pin bones are included in the fillets. "Ribbing" devices which remove these bones to produce a truly boneless fish fillet will be found elsewhere in this class. See the search note below.