Did You Know...
...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 |
| 4865906 | Flame retardant yard blend An abrasion and fine resistant permanent press fabric or fabric structure comprising a batting or yarn consisting of an intimate blend of oxidized polyacrylonitrile and at least two fibers selected from the group consisting of polyvinyl halide, polybenzim... | 09/12/1989 |
