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 |
| 7623642 | System and method for playing call indications for telecommunications systems at least partially implemented in computer file access networks This invention is especially intended for playing Ring Tones (referred to hereinbelow as “RT's”) on a called computer terminal, and/or Ring Back Tones (referred to hereinbelow as “RBT's”) on the calling computer terminal, in voice communications selected fro... | 11/24/2009 |
