(1) All units manufactured or delivered prior to sale or sold or offered for sale in this state shall bear a bureau insignia and if applicable the insignia of a reciprocal state or the certified third party inspection agency. Each insignia shall be assigned and affixed to a specific unit. Assigned insignia are not transferable and are void when not affixed or assigned, and all such insignias shall be returned to or may be confiscated by the bureau. The insignia shall remain the property of the bureau and may be reappropriated by the bureau in the event of violation of the conditions of approval.

(2) Any unit manufactured prior to the effective date of these rules need not bear an insignia.

(3) Any unit manufactured subsequent to the effective date of these rules which was neither manufactured nor delivered prior to sale nor sold nor offered in this state need not bear an insignia.