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 |
| 7370426 | Cutting tee square The apparatus includes a first plate for supporting the first surface of the article adjacent to the edge part of the article, a second plate extending from one end of the first plate in order to support the second surface of the article adjacent to the edge part of... | 05/13/2008 |
