Patents Granted on 1939-10-31


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

Patents Granted on 1939-10-31
Patents 1 - 5 of 5
Number	Date	Patentee	Title	Type
2,177,820	Oct. 31, 1939	H.F. Brown	Boring Chuck	boring heads
2,177,852	Oct. 31, 1939	D.D. Wile	Refrigerating Apparatus	refrigeration apparatus
2,178,135	Oct. 31, 1939	S.G. Brady	Trimming Mechanism for Grinding Wheels	grinder dressers
2,178,205	Oct. 31, 1939	G.O. Johnson	Punch press control
2,178,441	Oct. 31, 1939	F.R. Swanson	Milling machine