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 |
| 4376143 | Method for the spray-coating of the inside of tubular bodies having a seam A method and apparatus are disclosed for the spray-coating of the interior of a hollow body, one region of which, e.g. a seam, must receive a heavier coating than the remainder of the surface to be sprayed. A single spray coating operation is performed, i... | 03/08/1983 |
| 4357900 | Apparatus for the automatic coating of articles An apparatus is disclosed for the automatic coating of articles. The apparatus has a spray device controlled by a programmed control device. A transport device transports the articles along a predetermined path to a coating position and then away therefro... | 11/09/1982 |
| 4346732 | Pressure regulator for gaseous and liquid fluids The invention is a pressure regulator for gaseous and liquid fluids of the type comprising: a main valve disposed between an inlet and an outlet; a control pressure space, the pressure in which acts on the main valve body and which is preferably connected... | 08/31/1982 |
| 4343436 | Method and apparatus for the spray-coating of the inside of tubular bodies having a seam A method and apparatus are disclosed for the spraycoating of the interior of a hollow body, one region of which, e.g. a seam, must receive a heavier coating than the remainder of the surface to be sprayed. A single spray coating operation is performed, in... | 08/10/1982 |
| 4066041 | Apparatus for electrostatically applying coating material to articles and the like An apparatus for the electrostatic application of a coating material in the form of a liquid to articles or the like comprising a nozzle at the region of which there are provided at least two electrodes at which there is applied high-voltage of the same p... | 01/03/1978 |
