Patents for Nancy C. Rittmann


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Patents for Nancy C. Rittmann
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	4,718,127	Jan. 12, 1988	S.R. Wente, R.S. Stever, N.C. Rittmann	Helmet Visor with Locking Hinge Assemble
	4,934,222	Jun. 19, 1990	D.D. Grover, N.C. Rittmann	Ergonomic Tool
	4,982,612	Jan. 08, 1991	N.C. Rittmann	Torque Wrench with Measurements Independent of Hand-Hold Position