Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,712 pages of information and 247,105 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
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Professor Elisha Gray ( -1901) | Professor Elisha Gray (1835-1901) | ||
American engineer who developed "speaking telephones" | |||
== See Also == | == See Also == | ||
Professor Elisha Gray (1835-1901)
American engineer who developed "speaking telephones"
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