Patent US 4613875A

Patent number	US 4613875A (click link for details and documents via Google Patents)
Title	Air assisted ink jet head with projecting internal ink drop-forming orifice outlet
Inventors	Hue P. Le, Charles W. Jaeger, James C. Oswald
Company	Tektronix Inc
Filing date	1985-04-08
Grant date	1986-09-23