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Patents for Ivan J. Rahn
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,601,630	Jun. 24, 1952	R.J. Rahn, I.J. Rahn	Angle block and method of manufacture
	3,159,469	Dec. 01, 1964	R.J. Rahn, I.J. Rahn	Gradient temperature normalizer for surface plates or blocks

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