Using the company logo on every slide of the slideware during a sales meeting doesn’t make sense.
Of course, the logo has to be on every page of your written proposal for many reasons, but no more than first and last page of the slideware.

Stop using your company logo on every slide of your sales presentations.

Using the logo  on every slide of the live sales presentation, is based on a wrong understanding of the word “branding”.
“Branding” is one of the most overused and misunderstood terms in use today.
Many people confuse the myriad elements of brand identity with brand or branding. The meaning of brand and branding goes far deeper than simply making one’s logo as recognizable as possible. Branding is about making the customer remember you and your company: If you want people to remember you and your company, then make a good, honest sales presentation.
The logo won’t help make a sell or make a point, but the clutter it brings does add unnecessary noise and makes the presentation visuals look like a Commercial for soaps.  We don’t begin every new sentence in a conversation by restating our name, so why should you bombard people with your company logo on every slide?

As a consequence, in your sales presentations you should remove logos from all except the first and last slide.
Most companies with a PowerPoint template certainly insist that their sales reps use the company logo on every slide. But is this good advice? Slide real estate is limited as it is, so don’t clutter it with logos and trademarks, footers, and so on….  As if it was a book, a printed document, or a written sales proposal…. when it isn’t one!