FR895834A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device used to teach shorthand
Assignee: Henri Samuel Ruchonnet
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Filing: 1943-06-24
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Granted: 1945-02-05
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Expires: 1963-06-24
Abstract
No abstract record available.
Inventors
- 👤 Henri Samuel Ruchonnet
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 20:06
CPC Classifications
G; G09; G09B; G09B11/00; G09B11/08
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