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 |
| 7436607 | Lens module A lens module includes a base; a focusing ring rotatably mounted to the base and having at least one driving portion formed on a torus thereof, the driving portion having at least two positioning portions and at least one inclined portion in connection with the two ... | 10/14/2008 |
