Young Electric Sign Co. and Young Electric

WADE, Justice. This case is here on a writ to review a deficiency assessment for sales taxes for the period from July 1, 1950,
to June 30, 1953, by the defendant State Tax Commission against the two plaintiffs corporations, Young Electric Sign Co. and
Young Electric Sign Co., Inc. Both corporations do the same kind of business and the books and records of both are kept at
the office of the Young Electric Co. in Salt Lake City, Utah, and the same method of accounting is used for both. The questions
involved pertain to both companies so no distinction as to either will be made in this opinion hereafter. The business of the plaintiffs consisted of the manufacture and sale of electric signs and parts thereof, the manufacture
and rental of electric signs and the maintenance and repair of electric signs, both those manufactured and sold or rented
by the plaintiffs or by others. There is no dispute between plaintiffs and defendant as to the taxes chargeable on the direct
sales of signs and sign parts or on maintenance agreements by plaintiffs and owners of signs either manufactured by them or
others. The disagreement centers on plaintiffs' rental agreements and options and rewrites thereof and on repair sales.