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 |
| 5394619 | Portable clothes dryer and room humidifier A clothes dryer designed to rest over the register of a floor duct delivering hot air from a forced hot air heating system. The dryer is a vertical hollow column, closed at the top and open at the bottom, to which are attached one or more foldable drying ... | 03/07/1995 |
| 5379726 | Handled dog collar An animal collar, more specifically a dog collar for use with large and powerful dogs, has a rigid handle securely affixed to its center so that the handler maintains complete control over the dog at all times and there is excellent communication between ... | 01/10/1995 |
