NEW YORK: Google Inc., which has expanded beyond its core search operations into mobile phones and other products, is developing a local coupon service similar to Groupon. Like Groupon Inc., the service, Google Offers, will offer time-limited deals from local vendors, such as restaurants. Ten dollars, for example, might buy $20 worth of food at a local cafe. “Google is communicating with small businesses to enlist their support and participation in a test of a pre-paid offers/vouchers program,” said Google Inc. spokesman Nate Tyler. Google would not say when Offers would be available. While Groupon is Google's most obvious competitor when it comes to offering local deals, the field of coupon sites has rapidly grown to include sites such as LivingSocial and Tippr. Flash sales site Gilt Groupe and the newsletter DailyCandy also offer local deals. Google wants to expand in local advertising. Last year, it promoted Marissa Mayer, who oversaw the company's core search products to grow the company's geographic and local services business, and gave her a seat on the company's operating committee of top decision