Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7435158 | Initial position setting method of grinding wheel in vertical double disc surface grinding machine The present invention provides an initial position setting method of grinding wheels, before starting a grinding operation, in a vertical double disc surface grinding machine for surface grinding the upper and lower grinding surfaces of a work-piece simultaneously b... | 10/14/2008 |
