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Class 235/423 - Subtraction


Subclass of Class 235 - Registers
Definition: Subject matter wherein the mathematical operation performed
No. of patents: 3
Last issue date: 03/13/2007


NumberTitleIssue Date
7188760Counting apparatus
A counting apparatus for counting the number of persons in an establishment. The counting apparatus includes a housing being designed for being held in a hand of a user. An intake assembly is coupled to the housing. The intake assembly is designed for being actuated...
03/13/2007
7110512Method and apparatus for providing prepaid local telephone services
A system and method for providing prepaid dialtone services. The system includes a prepaid dialtone service center having an applications server that maintains a prepaid dialtone subscriber database including subscriber identification and service period information....
09/19/2006
7046239Electronic apparatus
An electronic device includes a display having a memory function and a communications capability. Display functions are controlled based on a state of the operation of the device and/or based on a state of received data. Also disclosed is a method of selectively dis...
05/16/2006
 
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