human: What do I need to file to request an error appearing in printed patent be corrected?
assistant: You should file a request for a Certificate of Correction that contains the following:
A transmittal letter or cover letter that includes bibliographic data identifying the:
 patent number
application number
inventor(s)
issue date
title of invention
NOTE: The transmittal letter should be signed by the attorney of record or owner of record and should state any facts supporting the requested corrections.

A copy of any document supporting the requested correction(s), your search revealed, that are not in the Office record or file (e.g., post card receipts, amendment(s), 1449)
Form PTO/SB/44 (same as form PTO-1050)
Identification of the location of error(s). Identify them by column and line number, using the nearest marginal line number in the printed patent.
Leave 2 inches at the bottom of the last page or first page if only one page.
No fee is required to correct errors made by the Office; however, if it is an applicant's error the required fee for consideration is $100.
All requests are to be mailed to:
Commissioner for Patents
Office of Data Management Attention: Certificates of Correction Branch
P.O. Box 1450
Alexandria, VA 22313-1450
For more information, contact the Certificates of Correction Branch by e-mail: CustomerServiceCoC@uspto.gov(link sends email) or by telephone: 703.756.1814.