Okla. Stat. tit. 12A, § 12A-2-606: What Constitutes Acceptance of Goods

(1) Acceptance of goods occurs when the buyer

(a) after a reasonable opportunity to inspect the goods

signifies to the seller that the goods are conforming

or that he will take or retain them in spite of their

nonconformity; or

(b) fails to make an effective rejection (subsection (1)

of Section 2-602), but such acceptance does not occur

until the buyer has had a reasonable opportunity to

inspect them; or

(c) does any act inconsistent with the seller's ownership;

but if such act is wrongful as against the seller it

is an acceptance only if ratified by him.

(2) Acceptance of a part of any commercial unit is acceptance of

that entire unit.