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 |
| 6390896 | Method and device for cutting a multiplicity of disks from a hard brittle workpiece A method for cutting a multiplicity of disks from a hard brittle workpiece is by moving the workpiece at a defined feed rate through a wire web of a wire saw. In the method, the wire web is formed by a sawing wire which moves in a reciprocating manner and... | 05/21/2002 |
| 5210980 | Diamond grinding machine for threading and forming hard materials such as ceramics, carbide and glass objects A versatile thread grinding machine includes a grinding wheel with concentric thread forms thereon, rotatable about a first axis, and a work spindle which is rotatable about a second axis. Both the angularity and distance between the axes may be varied. I... | 05/18/1993 |
| 5097634 | Tool grinder apparatus and method The present invention relates to a apparatus and method for sharpening rotary tools which includes a base for supporting a housing and a slidable table. The housing includes a motor which drives a grinding wheel located at the end of the drive shaft. A sl... | 03/24/1992 |
