Did You Know...
...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 |
| 4261452 | Overrunning clutch An overrunning clutch designed for use with engine starters and the like whereby the starter may apply its output to start the engine without damage due to overspeed of critical starting motor components after the engine has started and obtained running s... | 04/14/1981 |
