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| Number | Title | Issue Date |
| 6943691 | Tamper indicator for a smoke detector The present invention is a tamper indicating kit for use with a smoke detector having a base plate for mounting to a mounting surface such as a ceiling or wall, and the smoke detector also including an openable cover connected to the base plate; the tamper indicatin... | 09/13/2005 |
| 6774809 | Personal computer card slot and information processing device using same A PC card slot and an information processing device using the PC card slot are provided which are capable of having a user recognize a state of a PC card so that the user should not pull out the PC card carelessly or accidentally during access to the PC card or befo... | 08/10/2004 |
| 6304830 | Automatic keyboard testing apparatus An automatic keyboard testing apparatus includes a pair of support arms fixed to a machine frame for supporting a keyboard to be tested therebetween. A clamping device secures the keyboard between the support arms. A test module has testing units for oper... | 10/16/2001 |
| 5835014 | Annunciator system Protection of manual override lock and key systems for an electronic security system is provided by an annunciator system which is activated when access to a manual override keyhole is attempted.... | 11/10/1998 |
| 5524197 | Workstation for displaying dynamic image with real-time special effects A dynamic-image displaying workstation provided with a display device for displaying an image, a video signal processing circuit for outputting dynamic-image data representing a dynamic image corresponding to a video signal, a first dual port memory for r... | 06/04/1996 |
| 4931741 | Branched sensor system A detection and location system, e.g. for liquid leaks, comprising a trunk line sensor cable and a plurality of branch line cables at intermediate points of the trunk cable. Each of the cables comprises two insulated conductors and two non-insulated condu... | 06/05/1990 |
| 4267549 | Pull station protector A fire alarm pull station protector is provided comprising a wall mounted framing member and a cover adapted to abuttingly engage the framing member. The cover is pivotally connected to the framing member by hinge means having a laterally displacement piv... | 05/12/1981 |
