Illustrated description of a combined free-wheel, brake and speed-changing mechanism. (1700 w.)
The Columbia bicycle two-speed gear
Mach, N Y
1904
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
The pedersen three-speed bicycle gear
Engineering Index Backfile | 1906
BICYCLE SPEED CHANGE GEAR AND BICYCLE ASSIST SYSTEM WITH THE SAME
Europäisches Patentamt | 2018
|Bicycle variable speed controller for immediate gear shifting
Europäisches Patentamt | 2022
|