Hi Ron:


>   1. UL in a circle (the famous UL Listing mark symbol),
>   2. The word "LISTED" in capital letters,
>   3. The assigned control number*, and
>   4. Product identity (e.g., NWGQ, I.T.E., etc.)
>   
>   * The assigned control number is a designation that UL assigns to a 
> manufacturer, or manufacuring
>   location (I have also seen UL file numbers used here, although I'm not sure 
> that UL objects to
>   that).

The file number cannot replace the control number.
The control number is always required.

The file number can replace the manufacturer's name,
or can be used in addition to the manufacturer's
name.  

>   So, given the above and IMHO, I would say that just a generic UL Listing 
> mark would neither be
>   acceptable nor authorized by UL. However, I recommend contacting UL for 
> their official position on
>   the use of their Listing mark.

The generic UL mark (the UL in a circle -- without the
other three items) may be used in advertising or on 
the product carton.  I believe UL has some guidelines 
for this use.


Best regards,
Rich




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