Carlson was becoming worried that Battelle was not developing electrophotography quickly enough; his patent would expire in ten years
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Carlson was becoming worried that Battelle was not developing electrophotography quickly enough; his patent would expire in ten years
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.