Summary: Use Windows PowerShell 3.0 to find specific WMI properties.
How do I find what WMI class contains the Service Pack property?
Charlotte PowerShell User Group member Brian Wilhite says: The easiest way to find the WMI class or classes that contain the “Service Pack” property, you’ll use theGet-CimClass cmdlet with the -PropertyName parameter and specify a wild card search.
Get-CimClass -PropertyName *servicepack*