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 |
| 5058506 | Bidirectional drive and brake mechanism A space transport vehicle including a body movably mounted on an elongated guide member disposed in outer space and driven therealong. A drive wheel is mounted on a drive shaft in rolling engagement with the elongated guide carrying the vehicle. A brake m... | 10/22/1991 |
| 4848736 | Hand powered toy vehicle The present invention is a toy vehicle upon which a child may ride and propel the vehicle forwardly by merely oscillating a swingable lever. The toy vehicle incorporates a drive operated by oscillating a swingable lever, and wherein forward propulsion is ... | 07/18/1989 |
