400.2-207. (1) A definite and seasonable expression ofacceptance or a written confirmation which is sent within areasonable time operates as an acceptance even though it statesterms additional to or different from those offered or agreedupon, unless acceptance is expressly made conditional on assentto the additional or different terms.
(2) The additional terms are to be construed as proposalsfor addition to the contract. Between merchants such termsbecome part of the contract unless:
(a) the offer expressly limits acceptance to the terms ofthe offer;
(b) they materially alter it; or
(c) notification of objection to them has already been givenor is given within a reasonable time after notice of them isreceived.
(3) Conduct by both parties which recognizes the existenceof a contract is sufficient to establish a contract for salealthough the writings of the parties do not otherwise establish acontract. In such case the terms of the particular contractconsist of those terms on which the writings of the partiesagree, together with any supplementary terms incorporated underany other provisions of this chapter.
(L. 1963 p. 503 ยง 2-207)(1975) Where seller acknowledged buyer's purchase order which did not agree to sell exactly what buyer offered to buy an acceptance was effected. Steward-Decatur Security System v. Von Weise Gear Co. (C.A. M0), 517 F.2d 1136.
(1981) Buyer's purchase order containing general reference to seller's price quotation document was a definite and reasonable expression of acceptance within purview of Uniform Commercial Code, despite fact that purchase order contained additional handwritten warranty clause. Boese-Hilburn Co. v. Dean Machinery Co. (A.), 616 S.W.2d 520.
(1981) An acceptance which merely implies that it is "conditional" on an offeror's assent to a different or additional provision is insufficient to convert an acceptance into a rejection and a counteroffer. Boese-Hilburn Co. v. Dean Machinery Co. (A.), 616 S.W.2d 520.
(1981) Applicability of subdivision (2) of section 400.2-207 does not turn upon characterization of varying terms of acceptance as "additional" or "different". Boese-Hilburn Co. v. Dean Machinery Co. (A.), 616 S.W.2d 520.
(1981) Inclusion of a warranty clause where none previously existed and was expressly disclaimed constitutes a "material" alteration. Boese-Hilburn Co. v. Dean Machinery Co. (A.), 616 S.W.2d 520.