FR1078431A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Displacement control device for magnetic drum calculators
Assignee: International Business Machines Corp
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Filing: 1952-12-30
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Granted: 1954-11-18
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Expires: 1972-12-30
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
G; G06; G06C; G06C25/00; G11; G11B; G11B5/00; G11B5/004
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