Category:Keithley, E. Clinton/Collaborations

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Works by this person are generally in the public domain in Canada. Works by this person are not in the public domain in countries with a life+70 copyright term (including all EU countries), unless an exception applies. In the United States, all works first published before 1929 are in the public domain; works first published afterwards may be protected by copyright. See public domain for more information.
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E. Clinton Keithley (1880 - 1955)

E. Clinton Keithley

(15 November 1880 — 7 April 1955)

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Pages in category "Keithley, E. Clinton/Collaborations"

The following 2 pages are in this category, out of 2 total.