Patents for Bernard H. Johnson


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Patents for Bernard H. Johnson
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,859,665	Nov. 11, 1958	B.H. Johnson, F.E. Birch	Apparatus for Relieving Portions of the Thread Flanks of Double Enveloping Worm Elements
	2,978,843	Apr. 11, 1961	B.H. Johnson, F.E. Birtch	Apparatus for Grinding Double-Enveloping Worm Elements
	4,534,684	Aug. 13, 1985	B.H. Johnson	Apparatus For Milling A Gear For A Double Enveloping Worm Gear Drive