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Expired
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Francis Harrison
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Individual
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Publication of GB190512337ApublicationCriticalpatent/GB190512337A/en
12,337. Harrison, F. June 14. Drawings to Specification. Advertising.-The Provisional Specification states that mercury-vapour electric lamps may be made in the form of letters, designs, &c.
GB190512337D1905-06-141905-06-14Improvements in and relating to Metallic Vapour Electric Lamps
ExpiredGB190512337A
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