Form SCHEDULE 13G/A NOV Inc. Filed by: VANGUARD GROUP INC

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National Oilwell Varco Inc. (NYSE: NOV) Delayed: 18.52 -0.14 (0.75%)
Previous Close $18.66    52 Week High $38.89 
Open $19.01    52 Week Low $25.74 
Day High $18.63    P/E 3.40 
Day Low $18.36    EPS $5.44 
Volume 4,832,710