Okla. Stat. tit. 12A, § 12A-3-402: Signature by Representative

SIGNATURE BY REPRESENTATIVE

(a) If a person acting, or purporting to act, as a

representative signs an instrument by signing either the name of the

represented person or the name of the signer, the represented person

is bound by the signature to the same extent the represented person

would be bound if the signature were on a simple contract. If the

represented person is bound, the signature of the representative is

the "authorized signature of the represented person" and the

represented person is liable on the instrument, whether or not

identified in the instrument.

(b) If a representative signs the name of the representative to

an instrument and the signature is an authorized signature of the

represented person, the following rules apply:

(1) If the form of the signature shows unambiguously that

the signature is made on behalf of the represented

person who is identified in the instrument, the

representative is not liable on the instrument; and

(2) Subject to subsection (c) of this section, if (i) the

form of the signature does not show unambiguously that

the signature is made in a representative capacity or

(ii) the represented person is not identified in the

instrument, the representative is liable on the

instrument to a holder in due course that took the

instrument without notice that the representative was

not intended to be liable on the instrument. With

respect to any other person, the representative is

liable on the instrument unless the representative

proves that the original parties did not intend the

representative to be liable on the instrument.

(c) If a representative signs the name of the representative as

drawer of a check without indication of the representative status

and the check is payable from an account of the represented person

who is identified on the check, the signer is not liable on the

check if the signature is an authorized signature of the represented

person.