Bicycle sprocket unit

Details Bicycle sprocket unit Bicycle sprocket unit

1998-02-06

2000-09-05

Douglas, Alan P.

Transportation

Cycle or motorcycle

Element or attachment

1211

Patent

active

D04305108

REFERENCES:
patent: D30038 (1899-01-01), Patee
patent: D35193 (1901-10-01), Dodge
patent: D222572 (1971-11-01), Shimano et al.
patent: D242539 (1976-11-01), Manofsky et al.
patent: D266558 (1982-10-01), Breen et al.
patent: D306842 (1990-03-01), Beiser
patent: D366017 (1996-01-01), Boone
patent: D368055 (1996-03-01), Jouret
patent: 4439172 (1984-03-01), Segawa
patent: 4741724 (1988-05-01), Wang
patent: 4988328 (1991-01-01), Iwasaki et al.
Schwab Cycles, element A sprocket assembly, May, 1997, p. 23.
1996 Shimano Bicycle System Components Aug. 1995, pp. 20, 50 and 54.

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