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 |
| 5717568 | Telescoping drive-through menu system A new Telescoping Drive-Through Menu System for increasing the drive-through process by eliminating miscommunications that occur mesial the customer and the employee, and further providing a support which retracts the menu into a cavity thereby protecting... | 02/10/1998 |
