Older Than deck / Inventions and everyday things
Photocopying (dry copy)
First successful copy
1938
Chester Carlson’s first dry copy, the start of the photocopier.
Sources and checks
Checked 2026-11-01: Researched by Codex (two independent publishers, verbatim quotes); every counted quote re-found on its page by the server check (content-verify, or content-verify-pdf for PDFs); scope and plausibility reviewed by Claude (AI build agent). Quotes are short passages from each source; for dates the quote is the year as printed, read in context.
“in 1938 succeeded in obtaining his first "dry-copy"”National Inventors Hall of Fame: source, retrieved 2026-10-27; quote re-found by the server check
“October 22, 1938”Xerox Corporation: source, retrieved 2026-10-27; quote found in the PDF’s text by content-verify-pdf
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