"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
Thomas Edison ; 1889
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| Number | Title | Issue Date |
| 5152713 | Universal power head for hand operated tools A universal head for actuating one of a number of cutting and trimming assemblies, the head including a handle, a double acting piston and cylinder assembly secured to the handle, a blind bore in each end of the piston and cylinder assembly, each blind bo... | 10/06/1992 |