US patent
From The RadioReference Wiki
{{#if:
|[{{#ifeq:|uspto|http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=%7Chttp://www.google.com/patents?vid=}}{{#iferror:{{#expr: }}|{{{1}}}}} U.S. Patent ]
|{{US patent|123456|link text}}}}
Template:Documentation