Transportation – Cycle or motorcycle – Element or attachment
Patent
1998-02-06
2000-10-17
Douglas, Alan P.
Transportation
Cycle or motorcycle
Element or attachment
1211
Patent
active
D04320549
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patent: 4988328 (1991-01-01), Iwasaki et al.
1996 Shimano Bicycle System Components Aug. 1995, pp. 20, 50 and 54.
Schwab Cycles, element A sprocket assembly. May 1997, p. 23.
Brooks Linda
Douglas Alan P.
Shimano Inc.
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