Abstract: An electronic calculator is provided with an abacus and has both advantages of the calculator and abacus. An abacus and a portable electronic calculator are integrally constituted in such a manner as superimposing each other. Thus, the calculator according to the present invention can be used as a abacus by shifting a counter of an abacus along a guide bar thereof and it can also be used as a conventional electronic calculator by pushing the counter downward.

Abstract: The present invention discloses a receptacle for receiving a small article. The receptacle for receiving a small article comprises a receptacle body, a cover and a closing operation plate made of plastics each which is independently and integrally formed by injection molding so as to constitute the receptacle by assembling these constitutional members.According to the receptacle for receiving a small article of the present invention, there is no danger of loosening the connecting portion of the receptacle body and the cover or no danger of loosening a locking condition of the cover. Further unlocking action may easily be carried out.

Abstract: A clip used for business composed of a flat finger patch provided with fitting groove formed at a peripheral edge thereof, the height of one of groove edge of said patch being lower than that of the other groove edge, each holding portion of operational levers being fitted into fitting groove of said operational levers and said lower groove edge being arranged to be an inner side of said patch in fitting the same into said holding portion when said operational levers are risen simultaneously.

Abstract: A ballpoint pen which does not require use of a separate cap member is constituted in the form of a linkage of four levers which form a holder. At least one of the four levers is formed to be hollow so as to receive a writing element therein; and the front portion of said writing element projects out of the end of one part of a given connected piece of one of four connecting bodies firmly fitted into an opening portion of each end of the four levers. A concave portion is provided in a second part of the given connected piece for receiving the front portion of said writing element when the ballpoint pen is in closed pen condition. The tip of each lever is joined to the tip of an adjacent lever by a hinge element.