B23B 39 - General-purpose boring or drilling machines or devices; Sets of boring or drilling machines

Patents for B23B 39 - General-purpose boring or drilling machines or devices; Sets of boring or drilling machines (3,312)
04/1977
04/05/1977	US4016470 Electrical centering and boring system for transducers
04/05/1977	US4015457 Interlockable sliders
11/1976
11/09/1976	US3990326 Universal attachment drive
11/02/1976	US3989724 Tetrahydropyran-2-ols
09/1976
09/14/1976	US3979819 Machine tool with a turret head for multiple spindle units and automatic tool changing apparatus
08/1976
08/31/1976	US3977804 Multiple spindle drilling machine for wide flange beams
08/24/1976	US3976386 Drill head guiding control for multiple drills
08/17/1976	US3975109 Z-axis drive assembly
08/10/1976	US3973859 Automated drilling system
05/1976
05/11/1976	US3955896 Spider machining apparatus
05/04/1976	US3954347 Drilling machine
03/1976
03/02/1976	US3941496 Drilling machine for plaster casts or models