196.313.  License to sell eggs required — exceptions. — No person shall buy, sell, trade or traffic in eggs in this state without a license with the following exceptions:

  (1)  Those who sell only eggs produced by their own flocks, provided such eggs are not sold at an established place of business away from the premises of such producer;

  (2)  Hatcheries which purchase eggs used exclusively for hatching purposes;

  (3)  Hotels, restaurants, and other public eating places where all eggs purchased are served in the establishment;

  (4)  Bakeries, confectioneries, and ice cream manufacturers purchasing eggs for use and used only in the manufacture of their products.