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 |
| 5256106 | Method and apparatus for automatic corn cob reduction A combine is improved to reduce corn cobs to usable segments automatically by changing the combine arc to circular and adjusting its clearance and altering its cross bar spacing; changing the straw walker sieve slots and adding a cob conveyer adjacent to ... | 10/26/1993 |
