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In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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| Number | Title | Issue Date |
| 6925169 | Information entry device The objective of this invention is to protect the information entry such as a PIN from theft by observation of the finger movement based on the conventional fixed arrangement of entry keys. The present invention is an information entry device including: keys ... | 08/02/2005 |
| 6912280 | Keypad device A keypad device for a mobile telephone or other device utilizing a keypad or keyboard is comprised of a flexible substrate and a keypad cover. The flexible substrate includes a plurality of keys affixed to the surface as well as a plurality first conductive strips a... | 06/28/2005 |
| 5488657 | Apparatus for and method of operating an automatic log on/log off circuit in a telephone system by disconnecting a headset Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied, and that calls can be directed to that workstation, by determining whether or not the amplifier that provides the interface between the tele... | 01/30/1996 |
| 5235635 | Keypad monitor with keypad activity-based activation A keypad monitor which monitors the condition of a plurality of switches of a keypad is activated in response to receiving clock signals from an external clock source and is deactivated in the absence of the clock signals. The keypad monitor includes a ke... | 08/10/1993 |
| 5220597 | Dialing apparatus for power failure extension telephone set of key telephone system Disclosed is a dialing apparatus used for a power failure extension telephone set 30 in a key telephone system. The power failure extension telephone set 30 is driven by power supplied from a key service unit 2 so as to function as an extension telephone ... | 06/15/1993 |
| 4375583 | Indirectly activatable telephone system There is provided an arrangement for the indirect impulsing of a number dialed on a telephone. The arrangement includes an impulsing mechanism which provides impulses at preset intervals to actuate a circuit completion switch. A shutter is movably mounted... | 03/01/1983 |
