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The Patent and Trademark Depository Library Program, a network of Patent and Trademark Depository Libraries (PTDLs) located in the 50 states, the District of Columbia and Puerto Rico, provides access to many of the same products and services offered at the USPTO search facilities in Arlington, VA. A PTDL is a library designated by the USPTO to receive copies of patents, CD-ROMs of registered and pending trademarks, and patent and trademark materials, all of which are then made available to the public at no charge. The libraries also disseminate patent/trademark information and offer internet access to USPTO’s online services.

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