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 |
| 5226387 | Self-latching stanchion and operator system An improved cattle stanchion has a frame supporting animal restraint mechanism having a moveable restraint wand and moveable wand support bar that cooperate in moving to various operative positions. The restraint wand is hinged between its ends to the kne... | 07/13/1993 |
| 4314528 | Cattle stanchion having a simplified self-locking mechanism A multi-station cattle stanchion has a top rail with a trackway extending longitudinally of the stanchion in which the upper ends of a generally upright, J-shaped pivoting standard move laterally. A gravity operated locking bail is pivotally mounted at on... | 02/09/1982 |
