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 |
| 6964219 | Blast resistant partitions The invention provides an array of blast-resistant partitions arranged to subdivide a predetermined space into a multiplicity of interconnected subspaces and thereby to substantially confine an explosive blast to one or more of the subspaces while protecting the rem... | 11/15/2005 |
| 5431823 | Process for supporting and cleaning a mesh anode bag The invention provides a process for supporting and cleaning a mesh anode bag of the type having one open end, one closed end, and being sealed along its lateral sides, the bag containing particles of discharged active zinc therein along its inner surface... | 07/11/1995 |
