From a command prompt use a command like the following to find the IdentifyingNumber
wmic product where "Name like '%Word%'" get Name,Version,IdentifyingNumber
Then use PowerShell to run a command like the following using the IdentifyingNumber as the GUID
gwmi
...
-Query
...
"SELECT
...
Value
...
FROM
...
Win32_Property
...
WHERE
...
Property='UpgradeCode'
...
AND
...
ProductCode='{YourGuid}'"
...
|
...
Format-Table
...
Value