...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7003719 | System, method, and software for inserting hyperlinks into documents On the Internet, millions of documents are electronically linked via embedded hyperlinks. The hyperlinks, which function as network addresses for specific documents, can be selected by a user to “jump” electronically from a document on one computer to a document... | 02/21/2006 |