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 |
| 7065854 | Abutting clinch-joining method An in-expensive method to join metals or other materials by a slug that is compressed or clinched into a punched or machined substantially rectangular slot in two adjoining pieces. The final assembly is flat and of the same thickness as the clinched material. It cou... | 06/27/2006 |
| 4084698 | Egg weighing device Egg grading equipment of the type wherein a series of weighing devices each having a balance beam adjusted to respond to the weight of an egg of predetermined weight are provided with activating means which are cushioned or damped so as to render the weig... | 04/18/1978 |
