| http://www.w3.org/ns/prov#value | - No. 3,628,581 and FIG. 2b is a partial top view of the conventional blade holder;FIG. 3 is a vertical sectional view on an enlarged scale showing the support members and hook members for the knife blades;FIGS. 4a and 4b are a partial side and top views respectively of the blade holder of the present invention,FIGS. 5a and 5b are top and side views of different types of hook members which can be al
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