Patent Order Punch Card with Synchronous Motor Patent Papers


This orange punch card, used by the U.S. Patent Office, is attached to a copy of the patent papers the card describes. The card has 53 columns versus the standard IBM 80-column punch card. It is marked PO-33, PATENT ORDER (Letter Unit) on the left edge, and IBM D7 7517 on the bottom edge.

The following information is punched and printed on the card: the patent number (1913948), customer number (11530), month (01), day (29), and serv. code (6M).

The patent papers requested (5 pages) were for patent number 1,913,948 filed on May 2, 1932 by David Perlman for a Synchronous Motor. His patent was for improvements in electrically operated time-pieces.

Maker: IBM

Location: Currently not on view

See more items in: Medicine and Science: Computers, Computers & Business Machines, Science & Mathematics


Exhibition Location:

Data Source: National Museum of American History

Id Number: 2017.3122.03Nonaccession Number: 2017.3122Catalog Number: 2017.3122.03Patent Number: 1,913,948

Object Name: punch carddocument, patent, copy

Physical Description: orange (punch card color)paper (overall material)Measurements: punch card: 8.2 cm x 12.2 m; 3 7/32 in x 40 1/32 ftoverall: 27.85 cm x 21.6 cm; 10 31/32 in x 8 1/2 in


Record Id: nmah_1861055

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