• 3 Journals, Magazines, Newspapers
• 1 Computer file

• 1 Databases
• 1 Patent searching

• 2 United States. Patent and Trademark Office. Information Products Division
• 2 United States. Patent and Trademark Office. Office of Electronic Information Products
• 1 Patent and Trademark Depository Library Program (U.S.)

• 3 English

• 3 United States

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