— In an action to recover damages for breach of contract, defendant Shasta Industries, Inc., appeals from a judgment of the Supreme Court, Westchester County (Marbach, J.), entered April 19, 1983, which, after a nonjury trial, was in favor of plaintiff in the principal sum of $31,366.72 as against defendant Shasta Industries, Inc. H Judgment affirmed, with costs. H Plaintiff’s claim arises out of defendants’ failure to deliver travel trailers for use during the Lake Placid Olympics, by January 15, 1980, the date provided in the contract. Appellant asserted as a defense that the delivery deadline was extended by mutual assent of the parties. KThe contract between the parties made time of the essence and expressly provided that no modification of its terms would be valid “unless the same be made in writing, signed by an authorized officer of each of the corporate parties”. Such a provision is to be enforced absent an executed modification, waiver, or estoppel (see General Obligations Law, § 15-301; Uniform Commercial Code, § 2-209; Rose v Spa Realty Assoc.,
