Comic book letter column to expand the lettercols in his books to a second, separate page (such as "Flash-Grams — Extra", "Letters To the Batcave — Extra", and "JLA Mailroom — Special Peter Sanderson Edition") to facilitate Sanderson's sharp analysis. By the 1970s, nearly all mainstream comics included letter pages. Historian Matthew J. Pustz describes the different approaches of the two major publishers, DC and Marvel Comics: As the letter column became a longstanding tradition in the mainstream comic book industry, it even became a feature of underground, independent, and alternative comics of the 1970s and 1980s. In the 1990s, a trend in letter
Samsung S2 T-Mobile, Galaxy S2 Epic 4G, Galaxy S Showcase, Droid Charge and Galaxy Prevail) in the United States which has been denied by the court. In 2015, Samsung has been granted more U.S. patents than any other company - including IBM, Google, Sony, Microsoft and Apple. The company received 7,679 utility patents through 11 December. On 2 August 2016, Samsung Electronics unveiled the Galaxy Note7 smartphone, which went on sale on 19 August 2016. However, in early September 2016, Samsung suspended sales of the phone and announced an informal recall. This occurred after some units of the phones had batteries