Number | Date | Country | Kind |
---|---|---|---|
9-259775 | Sep 1997 | JPX |
Number | Date | Country |
---|---|---|
813264 | Dec 1997 | EPX |
6-310166 | Nov 1994 | JPX |
08131382 | May 1996 | JPX |
9-7623 | Jan 1997 | JPX |
09092318 | Apr 1997 | JPX |
09171842 | Jun 1997 | JPX |
10-284100 | Oct 1998 | JPX |
Entry |
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Galen R. Frysinger: "The Economical Fuel Cell" I.E.E.E. Spectrum, vol. 6, No. 3, Mar. 1969, pp. 83-90 XP-002090617. |
Ishizawa M. et al.: "Portable Fuel-Cell Systems" NTT Review, vol. 9, No. 5, Sep. 1997, pp. 65-69 XP-000704773. |
Chemical Abstracts, vol. 125, No. 2, Jul. 8, 1996, abstract No. 15128, Ishizawa, Maki et al.: "Portable Fuel Cell System for Telecomminications Use" XP000666114. |