How to serialize New-WebServiceProxy object

I need some help in serializing a object created by PowerShell New-WebServiceProxy and re-utilize by de-serializing the same object.

I am creating the New-WebServiceProxy object using following syntax

$wcf = New-WebServiceProxy -Uri http://localhost:8732/MyWcfService?WSDL -Namespace "Company.Product.SubApplication"

Thanks,

Mukul