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 |
| 7021398 | Box scraper assembly A box scraper attachment is provided for mounting on the boom arms of a skid-steer vehicle or the like. The box scraper attachment includes a main frame having castor wheel assemblies mounted at the forward end thereof. A box scraper is selectively vertically movabl... | 04/04/2006 |
| 4189009 | Wheel mounted earth moving scraper with pivot in center of pivot axle A wheel mounted earth moving scraper for towing behind a tractor or the like. The scraper mounted on a wheel axle. The scraper characterized by a scraper housing attached to a pivot axle which is pivotally attached to the wheel axle for pivoting the scrap... | 02/19/1980 |
