Yes. Those are years, plural, when Google the company was not putting advertisements into search results. They may have always monetization via ads when they decided to turn it into a company (Larry and Sergei did not think about ads when they were developing the initial product, but I'll concede that they likely just hadn't ever considered that they'd be able to turn a research product into a company at all), but they inarguably built the product before selling one single advertisement.