Abstract: A telephone network system for communicating location or status information concerning a mobile unit by cellular telephone coupled with the mobile unit in which sensed location or status information at any selected instant of time is converted to one of a multiple of coded, assigned telephone call-numbers uniquely identifying such information at that time, where the assigned call-number is transmitted over the network, and where the assigned call-number is received at a remote location, with the location or status information being extracted before any telephone call-connection from the mobile unit to the remote location is completed. The coded, assigned telephone call-numbers are reserved by the system operator from the telephone company serving the area of the remote location, and extracting the location or status information before any telephone call-connection is completed saves the costs to an end user of the mobile unit associated with a conventional telephone call-connection.

Abstract: A dental hygiene instructional display using a humanoid figure providing a facial expressing exhibiting representations of human teeth in adjacent upper and lower jaws. The teeth are divided into sectors and a pair of light emitting diodes of different colors are dedicated to flashingly illuminate each of the sectors, in sequence. A circuit for controlling illumination of the light emitting diodes adjustably controls both the duration of the period of brushing devoted to each sector, as well as the flash period during illumination of each cycle.

Abstract: In a section of an oil field a first and only bore hole (5) is drilled through the strata (3) carrying heavy oil until the underlying stratum (4) void of heavy oil and enlarged to a cavern-like collection chamber (9). Around this first bore hole (5) a plurality of second bore holes (6) are drilled through the strata (3) carrying heavy oil to the stratum (4) in a pattern comprising several circles. A further pattern of third bore holes (7) is drilled also in a circle-like pattern through the strata (5) carrying heavy oil, which third bore holes (7) are followed by drainage channels (8), which extend to the collecting chamber (9). By means of electrodes arranged in the second bore holes (6) the heavy oil strata are preheated and thereafter steam is injected through the same bore holes (6) in order to drive flowable heavy oil against the third bore holes (7).