Difference between revisions of "Patent for a light projecting apparatus by E. W. Sohlberg (Q31174)"

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Patent for a light projecting apparatus by E. W. Sohlberg
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    EDMOND W. SOHLBERG, OF KANSAS CITY, MISSOUR, ASSIGNOR OF TwoTHIRDS TO MART (English)
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    1 May 1906Gregorian
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