Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6251481 | Method of making candles in a water bath A device for making decorative candles which have varied shapes and colors of wax throughout in an heated water bath and an apparatus utilizing said device comprised of multiple heated sources of melted wax suspended above an open topped waterproof box, h... | 06/26/2001 |
