Comaker

A comaker is a person who signs a negotiable instrument with another person person and thereby promises to share the liabilty to make payment on the due date.
Found on http://www.encyclo.co.uk/local/21213

Comaker

One of two or more people who sign the same check or promissory note. Each comaker is liable for the entire amount to be paid. (See also: maker)
Found on http://www.nolo.com/dictionary/comaker-term.html
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