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 |
| 4869266 | Patient monitoring unit for surgical use A patient monitoring unit is used to follow the actual changes in a patient's weight during the course of a surgical procedure. A patients' fluid inventory is vital to the patients' well being and any significant additions to or losses in body fluids are ... | 09/26/1989 |
