This is not a question, just hoping I might save others some time and trouble.
import clr
#clr.AddReference('NationalInstruments.LabVIEW.Interop.dll')
clr.AddReference('{filename.dll}')
from {.NET interop assembly namespace} import {.NET interop assembly class name}
print {.NET interop assembly class name}.{Method Name}({parameters})
Most of these items are from the .NET Interop Assembly build specification, Information settings. Method Name is found inside the Define VI Prototype dialog.
For some reason I did NOT need to worry about NationalInstruments.LabVIEW.Interop.dll, maybe thats just because of the software/paths on my particular machine?
Or, if you did not create the DLL yourself, you could open the dll in visual studio (see below/attached)
