Engineering:Visible file
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A visible file, sometimes just called a kardex, after a prominent purveyor, is a filing system for overlapping cards fixed in shallow drawers.
The best-known version was commercialized by Kardex.
The Library Bureau company commercialized the very similar L. B. Speedac.[1]
Another brand was the Index Visible System.
Notes
- ↑ The Magazine of Business 47:294 (1925)
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