Frank Tippen: Difference between revisions
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1935 Started company making | 1935 Started company making variable gears for machine drives under the name of 'Heterospeed' | ||
1948 Started production on an invalid chair | 1948 Started production on an invalid chair |
Revision as of 16:09, 9 January 2019
1935 Started company making variable gears for machine drives under the name of 'Heterospeed'
1948 Started production on an invalid chair