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 |
| 6015329 | Toy vehicle logging mill accessory A toy vehicle set accessory is claimed. The toy vehicle set accessory comprises a dumper station for removing a toy log from a toy vehicle. A saw mill is positioned substantially adjacent the dumper station. The saw mill receives a toy log from the dumper... | 01/18/2000 |
| 4660406 | Die manipulator An apparatus for manipulating the upper and lower dies of a die set comprising a gantry having a fixture mounted on a main frame for up and down movement, and a sub-frame mounted on the fixture for 180° of rotation. Clamping units are mounted on the sub-... | 04/28/1987 |
| 4016989 | Work handling apparatus A stack of workpiece fabrics carried on a mobile cart is brought to a sewing machine having a work surface spaced above the table surface of the cart on which the fabric is supported. An air powered lift mechanism mounted on the sewing machine and engaged... | 04/12/1977 |
