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 |
| 5418354 | Self service cart system A self service cart system is provided to speed throughput at a check out counter and thus reduce space devoted to check out counters. The cart comprises a bar code scanner for acquiring a price and a description of a product, a security scanner for conve... | 05/23/1995 |
| 4605102 | Transportation system having multiple direction cargo carrier door opener A transportation system in which cars having cargo containers are driven along tracks. Access to a car's cargo container is provided via a door on the car which is moved by a door drive system carried on the car. In the exemplary case of a remote bank tel... | 08/12/1986 |
| 4411336 | Railway transport banking system Heavy-duty railway transport equipment for carrying out banking services between a teller terminal inside a bank and a customer terminal at a remote drive-up station visible to the teller, which transport equipment can accommodate heavy and bulky banking ... | 10/25/1983 |
