Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 6753485 | Rotary switch containing fuse capabilities A rotary switch containing fuse capabilities. An electrical contact disc is rotatively mounted in a housing. A handle assembly is mounted to the electrical contact disc and rotates therewith, and is replaceably mounted in the housing so as to allow the handle assemb... | 06/22/2004 |
| 5898355 | Switch breaker having an arc prevention mechanism A switch breaker includes having a body; a press button having a link; a metal sheet having an electrical contact; a elastic member; a first terminal having a point contact; a second terminal; and a cover, characterized in that a protrudent part is formed... | 04/27/1999 |
| 5539370 | Inductive motor protective circuit breaker A molded case circuit breaker and current suppressing unit protects an electric motor without tripping during motor current reversal. Upon the occurrence of a short circuit within the protected circuit, the current suppressing feature rapidly suppresses t... | 07/23/1996 |
| 4930918 | Office machine, in particular matrix printer In an office machine, in particular in a matrix printer which is provided with a power grid component (3) for the power supply of the electrical or, respectively, the electronic circuits and which includes a safety fuse on the power grid input side, there... | 06/05/1990 |
| 4685028 | A.C. power entry module The invention relates to a power entry module for supplying power from an outside source to equipment with which the power entry module is in association. The module is made up of a one piece housing divided into at least two compartments with a first com... | 08/04/1987 |
| 4488201 | A.C. Power entry module An A.C. power entry module for supplying A.C. power to equipment which provides A.C. fusing, power on-off switching, RFI filtering and selection of voltage. The module can be utilized for both U.S. and European style fusing and a number of different volta... | 12/11/1984 |
| 4292616 | Combined toggle switch and front access fuse holder A combined cartridge fuse holder and switch incorporates the cartridge fuse as part of the switching mechanism. One end of the cartridge fuse is pivoted about a fulcrum contact coupled to a first terminal. A switch assembly swings the other end of the car... | 09/29/1981 |
| 3952273 | High voltage switch mechanism Disclosed is an interrupter switch mechanism for interrupting current flow in a high voltage electrical circuit. A tubular switch blade is mounted for linear movement to engage and disengage a stationary contact. A spring is positioned within the hollow i... | 04/20/1976 |