No person shall sell or offer for sale on either wholesale or retail levels within the state of Minnesota, any article or product which is said or represented to have been "blind-made" or with a connotation or an association with blindness unless such article or product shall have been made, processed, or repaired within the limits of the following specifications:
(a) Blind labor shall mean such work which has been expended by individuals whose central visual acuity does not exceed 20/200 in the better eye, with correcting lenses, or whose visual acuity is greater than 20/200 but with a limitation in the field of vision, such that the widest diameter of the visual field subtends an angle no greater than 20 degrees as determined by an eye specialist.
(b) A "blind-made" article or product shall mean that at least 75 percent of the hours of direct labor expended in the preparation, processing, packaging, or improvement of an article or product, excluding the supervision, inspection, administration, or shipping, shall have been performed by a person or persons whose visual acuity falls within the definition of blindness described above.
Any article or product which is sold or offered for sale in this state as a blind-made product shall include in its labeling the name of its manufacturer.
Any person, firm, or agency that willfully violates any provision of this section shall be guilty of a misdemeanor.