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 |
| 7560672 | Heated pump with boiling protection A heating system for heating fluid media including a carrier unit, a heating unit arranged on the carrier unit and a heat transfer element arranged on the carrier unit and includes a material which is a good conductor of heat, which heat transfer element has a first... | 07/14/2009 |
