Deutsche Bank Analyst Chris Whitmore tells clients in a note — as reported by “AppleInsider” (http://www.appleinsider.com) that a check with more than 200 stores on Black Friday show huge demand for Apple products, including the iPhone, iPad and Mac.

The analyst’s checks included about 100 Apple retail stores and more than 100 AT&T, Verizon, Sprint, Best Buy, Walmart and Target stores. Whtimore tells clients that about 75% of Apple retail stores polled were completely sold out of the iPhone 4S by the end of the day on Black Friday. However, Apple had restocked many of those stores by Saturday, as follow-up calls found that just 30% of Apple’s stores remained sold out of the iPhone 4S.

At AT&T stores, Whitmore found that about 50% were sold out over the weekend. Verizon also has trouble keeping the Apple smartphone in stock, while Sprint had adequate inventory to keep up with demand, he adds.

Meanwhile, Piper Jaffray analyst Gene Munster’s inquiries indicates that Mac sold at an average of 10.1 per hour on Black Friday. That’s up 23% from Black Friday 2010. Munster is forecasting 5.2 million Mac sales during the holiday quarter.