US Patent 4,682,150

Number:	4,682,150
Title:	Data compression method and apparatus
Filed:
Granted:
Inventor:	Mathes and Protheroe
Assignee:	NCR Corporation, Dayton OH

Comment by FAQ:A system and apparatus for compressing redundant and nonredundant binary data generated as part of an operation of a time and attendance terminal in which the data represents the time an employee is present during working hours.