Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7079022 | Emergency activation apparatus for a technical device A safety device is provided that can be connected with a technical device and an associated emergency activation apparatus. The safety device includes a rail. The rail and emergency activation apparatus are fashioned such that the emergency activation apparatus can ... | 07/18/2006 |
| 6590952 | Reactor manual control system In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing unit for generating sequence patterns based on the timing of ... | 07/08/2003 |
| 6545602 | Fire alarm system A fire alarm system provided with a fire receiver (1) to which a plurality of fire sensors and controlled apparatuses are connected. The fire receiver (1) comprises a LAN interface (11) for connecting with other fire receivers. When a fire sensor issues a... | 04/08/2003 |
| 6452490 | Home/commercial security monitoring system A method and apparatus for communicating between Customer Premises Equipment, (CPE) alarm sensing devices, and alarm monitoring stations. The sensing devices communicate with an end office switch by transmitting a message, such as a string of Dual-Tone Mu... | 09/17/2002 |
| 6313744 | Alarm system with individual alarm indicator testing A building alarm system includes addressable notification appliances connected to a system controller, with each notification appliance having a status indicator and an alarm indicator. The status indicator, such as an LED, provides for system test modes ... | 11/06/2001 |
| 6118374 | Process and device for the recognition of screws used in extruders or metering devices The invention concerns a process and a device for the recognition of screws used in extruders or metering devices. In order to create a process that excludes the possibility that mixtures of granulates or powders with incorrect mixing ratios occur through... | 09/12/2000 |
| 5818334 | Addressable devices with interface modules having electrically readable addresses In a communication system such as a fire detection system, individual addressable devices determine their addresses from address interface modules at the device locations. An interface module includes wire connectors for receiving system wires and a devic... | 10/06/1998 |
| 4988977 | Address setting means for fire detectors A fire detector assembly comprises a base (1) and a sensor (5) adapted to fit the base. The base (1) is provided with passive means, such as pins (6) or contacts arranged in a pattern to represent an address of the detector. When the sensor (5) is fitted ... | 01/29/1991 |
| 4804754 | Preparation of caprolactam from cyclohexanone oxime by Beckmann rearrangement Caprolactam is prepared in a process comprising (a) a Beckmann rearrangement of cyclohexanone oxime with oleum at from 70° to 130° C. in one or more rearrangement stages, and (b) aftertreatment of the reaction mixture obtained from the rearrangement stage in... | 02/14/1989 |
| 4271405 | Alarm control system In an alarm control system for protecting a premises, a four conductor bus line leading from a master control station is extended about the interior perimeter of the premises. Sensors positioned near each port of entry to be monitored are connected in par... | 06/02/1981 |
| 3982242 | McCulloh receiver A receiver is disclosed connected to a McCulloh loop, having an N or line side and a G or ground side, for receiving coded alarm signals from a plurality of McCulloh transmitters. The receiver is especially adapted for supplying the alarm signals to a com... | 09/21/1976 |