| 摘要 |
PCT No. PCT/EP91/01478 Sec. 371 Date Jul. 16, 1993 Sec. 102(e) Date Jul. 16, 1993 PCT Filed Aug. 6, 1991 PCT Pub. No. WO92/03852 PCT Pub. Date Mar. 5, 1992.An electrochemical device for providing a visual indication of the remaining life of a battery, the device comprising an electrode pair with a layer therebetween, the layer comprising a mixture of a photographic color coupler dispersion, an antioxidant and a photographic color developer in a binder. |
