...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 5789032 | Moldless coated board There is provided coated substrate where a filled flowable polyester composition is cured in contact with and bonded to the substrate. The composition contains 20 to 40% resin and in excess of 50% filler, the balance being welling agent, air release agent... | 08/04/1998 |
| 5683638 | Seamless flush mounted countertop sink A process for fabricating a seamless flush mounted countertop sink, which includes the steps of constructing a sink bowl (22) that has an outwardly extending peripheral top flange (26). The sink bowl is then captivated upside-down on a flat mold (34) and ... | 11/04/1997 |