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Patents for Robert C. Johnson
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
D152,987	Mar. 08, 1949	V.J. Kramer, R.C. Johnson, H.E. Laubach	Engine Lathes	engine lathes
2,469,881	May 10, 1949	V.J. Kramer, R.C. Johnson, H.E. Laubach	Headstock Transmission Gear Shifting Mechanism	metalworking machine mechanisms

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