(under subclass 78) Subject matter wherein the switch comprises within itself or forms an essential component of, a device into which information, in the form of an electric signal, can be introduced for extraction at a latter time, the switch being transferred to one or the other of its conditions depending upon the polarity of the energization current and remains in that condition subsequent to deenergization until reset.
(1) Note. The subject matter to be found here relates only to devices which essentially comprise a switching means whereby an interval of time occurs between the application of an input signal and the eventual completion of a circuit between input and output terminals or wherein the contacts are closed upon the application of a pulse of one polarity and held closed until the subsequent application of a pulse of another polarity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
157+, for other electromagnetically actuated switches with locking or holding means.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
401+, for magnetic storage devices. 326, Electronic Digital Logic Circuitry, appropriate subclasses for a transistorized logic circuit.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
185+, for a miscellaneous stable state circuit such as a bistable circuit.
365, Static Information Storage and Retrieval, appropriate subclass for read/write storage systems comprising magnetic storage elements.
