I believe the info you want is stored here:
computer.Patch and Compliance Definitions.LD95-CP_BASE-2014-0417.Patch Currently Installed
1 = installed
0 = not installed
I believe the query should be structured like this:
Computer.Patch and Compliance Definitions.Vulnerability ID = LD95-CP_BASE-2014-0417
AND Computer.Patch and Compliance Definitions.Patch Currently Installed = 1
This should give you all the machines that have installed LD95-CP_BASE-2014-0417
HTH