...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 |
| 6274130 | Hair conditioning composition A rinse off hair conditioning composition comprising: (a) about 0.05 to about 5% by weight of cationic surfactant, (b) 0.01 to 10% by weight of an emulsion polymerised dimethiconol nonionic conditioning polymer having the formula: HO--Si(CH3)2... | 08/14/2001 |