Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7078643 | Capacitor switch with internal retracting impedance contactor A capacitor switch including a power contactor and an impedance contactor located within a relatively slender container filled with dielectric gas. The container may be a “dead tank” or an insulator. For the insulator configuration, the switch also includes a co... | 07/18/2006 |
| 6566411 | Removing sulfur from hydroprocessed fischer-tropsch products An integrated process for producing desulfurized hydroprocessed products from Fischer-Tropsch synthesis is disclosed. The process involves isolating and desulfurizing a methane-rich stream from a natural gas source in a first separation zone and a desulfu... | 05/20/2003 |
| 5742017 | Circuit-breaker provided with a closure resistance having an insertion assembly A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically connected to a resistance (5) which is connected to a second termi... | 04/21/1998 |
| 5510591 | High tension circuit breaker capable of interrupting fault currents having a delayed zero crossing The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t0 and delay the zero crossing of the current after a maximum time lapse of ... | 04/23/1996 |
| 4910367 | Visible break switch An SF6 puffer interrupter switch includes one or more viewing windows located on the housing. The viewing windows are strategically located on a sidewall of the housing to allow all of the puffer interrupter assemblies within the housing to be ... | 03/20/1990 |
| 4417111 | Three-phase combined type circuit breaker A three-phase combined type circuit breaker is disclosed which comprises a common housing, three-phase interrupting units in said common housing, movable contacts of the interrupting units connected through link mechanisms to operating devices for three p... | 11/22/1983 |
