Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 5449971 | Method, composition, and means for limiting lead wire arcing in an arc discharge lamp A material is provided on the lead wires that support a filament of a fluorescent lamp assembly to inhibit arcing associated with filament burnout. The material comprises a glass that is non-alkaline. Another preferred arrangement is to incorporate a mate... | 09/12/1995 |
| 4223373 | Photoflash lamp array having reflective coating means Reflective coating means are provided to replace the conventional reflector cavities surrounding each photoflash lamp of a multilamp photoflash array. A reflective adhesive coating for this purpose can be applied to each photoflash lamp around a portion o... | 09/16/1980 |
| 4182608 | Photoflash lamp unit utilizing radiation and voltage responsive switch devices A photoflash lamp unit is described having a plurality of flash lamps fired individually and in sequence to include a plurality of solid state switching devices each capable of being converted from a high electrical resistance to a low electrical resistan... | 01/08/1980 |
| 4146917 | Photoflash lamp array having reflective coating means Reflecting coating means are provided to replace the conventional reflector cavities surrounding each photoflash lamp of a multilamp photoflash array. A reflective adhesive coating for this purpose can be applied to each photoflash lamp around a portion o... | 03/27/1979 |
| 4136378 | Photoflash lamp array having reflector at rear of transparent circuit board A photoflash lamp array comprising a plastic housing containing flash lamps positioned over a circuit board carrying switching circuitry for sequentially firing the flash lamps. The circuit board is made of transparent electrically insulating material hav... | 01/23/1979 |
| 4136379 | Photoflash lamp array having reflective circuit board A photoflash lamp array comprising a plastic housing containing flash lamps positioned over a circuit board carrying switching circuitry for sequentially firing the flash lamps. The circuit board is made of an electrically insulating material having a lig... | 01/23/1979 |
