Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 3993237 | Method for providing high-temperature internal insulation A ceramic fiber mat attached to the interior wall or surface of a high temperature chamber of furnace or adapted to overlie an intermediate insulating member positioned between the mat and a furnace wall, the fibers in the mat lying in planes generally pe... | 11/23/1976 |
| 3971178 | Add-on multiple glazing with hygroscopic material An additional pane is added to an existing glazing installation to provide an insulating, sealed airspace therebetween.... | 07/27/1976 |
| 3955330 | Smoke stop for doors A smoke stop for doors is disclosed. The smoke stop consists of a metal frame with a slot therein extending along substantially the entire length of the frame on the door side thereof; a continuous tube within the slot, the continuous tube having retarded... | 05/11/1976 |
