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 |
| 4921167 | Carrier section including flange member for connection to a guide rail A connection assembly for connecting guide rails to the flange of a load carrying member includes clamping elements and bolt members in-connection with the T-shaped groove of the flange of the load carrying member and the guide rails for securing the guid... | 05/01/1990 |
