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"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
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| Number | Title | Issue Date |
| 6842114 | Wire-based safety device for the detection of the theft of an object to be protected and operating method An electronic wire-based safety device for the detection of a theft of an object to be protected, the device including at least one detector connected by a wire-based electric link to a signalling unit, the detector being arranged in relation with an object to be pr... | 01/11/2005 |
| 5705982 | Intrusion detection, register and indication apparatus An apparatus for detecting intrusions into spaces of various kinds such as apartments, offices, lockers, and the like by either authorized or unauthorized persons apparatus monitors a specific portal for intrusion occurrence events using an intrusion sens... | 01/06/1998 |
| 5440107 | Method and apparatus for an improved money drawer assembly with money clip alarm system Embodiments of improvements to a money clip alarm system of a cashier's drawer are disclosed. In one embodiment, a terminal contact block device is mounted to the drawer tray and a non-shorting feed through spring contact block device is mounted to the dr... | 08/08/1995 |
| 4547660 | Feed box monitoring device A feed box monitoring device for counting the revolutions of an auger or the like used in mixing two or more feed ingredients in a feed box. The device alerting an operator when a uniform mix has been obtained in the feed box.... | 10/15/1985 |
| 4035792 | Cash register security system A cash register security system has a first latch normally adapted to engage and securely hold within a cash register a false drawer, a release device connected to the first latch for releasing the first latch from engaging and holding the false drawer wi... | 07/12/1977 |
