Adobe co-founder and developer of PDF Charles Geschke passed away

Adobe founder who helped develop Portable Document Format (PDF) document Charles Geschke passed away at the age of 81.

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Charles Geschke was an American businessman and computer scientist best known for founding the graphics and publishing software company Adobe Inc. with John Warnock in 1982.

The company is named after the Adobe Creek, a 14.2-mile-long northward-flowing stream originating on Black Mountain in Santa Clara County, California, United States.