Abstract: The present invention provides an air filter that is excellent in anti-molding and anti-bacterial functions. The anti-mold and anti-bacteria air filter is formed from fabric knitted and woven with a warp and/or a weft made of filiform thermoplastic resin including the organic anti-molding agent and filiform thermoplastic resin including the inorganic anti-bacterial agent. It is also possible to form multi-woven fabric knitted and woven with a warp made of filiform thermoplastic resin including the organic anti-molding agent and the filiform thermoplastic resin including the inorganic anti-bacterial agent.

Abstract: The present invention provides an air filter that is excellent in anti-molding and anti-bacterial functions. The anti-mold and anti-bacteria air filter is formed from fabric knitted and woven with a warp and/or a weft made of filiform thermoplastic resin including the organic anti-molding agent and filiform thermoplastic resin including the inorganic anti-bacterial agent. It is also possible to form multi-woven fabric knitted and woven with a warp made of filiform thermoplastic resin including the organic anti-molding agent and the filiform thermoplastic resin including the inorganic anti-bacterial agent.

Abstract: A flow display type indicator is provided which indicates the variation or the velocity of variation of the value of a physical quantity or a parameter in a readily identifiable form. The indicator includes a flow image forming unit to indicate the value of the predetermined physical quantity in a flow representation by enabling a flow representing image to be formed at one of a plurality of positions including first to n-th positions which are orderly disposed and offset from each other along a predetermined line. A flow image selector selects one from flow representing images at the first to the n-th positions in one of first and second directions depending on the polarity of an input signal at a speed in accordance with the magnitude of the input signal to allow the flow representing image forming unit to form a selected flow representing image.

Abstract: An apparatus capable of quickly capturing a channel to be measured of a cordless telephone in a shorter period of time than the time required by a conventional apparatus. After the waves received within all channels are converted in respect of their frequencies by a frequency converter, those out of the band are eliminated by an all-channel band pass filter. The waves outputted from the filter are amplified by an intermediate frequency amplifier and then inputted to a counter circuit. Since magnitude of the amplitude of the signal in the received channel to be measured is two or three times as large as that of interference waves, the counter circuit outputs a value within (the frequency of the channel to the measured).+-.

Abstract: An interdigital bandpass filter is provided which presents improved performance and is easy to manufacture. The filter is provided with a resonator plate which includes a plurality of resonator elements formed integrally with the resonator plate. For defining a space for accommodating these resonator elements, spacer plates are formed with respective openings. The filter is assembled by stacking the spacer and resonator plates and case plates and securing them to each other. Input/output conductors are coupled to the resonator elements through coaxial line coupling portions which are provided in such a manner that they extend in directions intersecting with the plane of the resonator plate toward the accommodating space.