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Class Information
Number: 434/158
Name: Education and demonstration > Language > Shorthand
Description: Subject matter relating to writing in which characters, abbreviations, or symbols are substituted for letters, words, or phrases.

Patents under this class:

Patent Number Title Of Patent Date Issued
7584091 Process and device for devising an abridged form of any term that is used in an alarm message intended to be displayed on a screen of the cockpit of an aircraft Sep. 1, 2009
4690644 Teaching apparatus, particularly for teaching shorthand Sep. 1, 1987
4035091 Training device for students of stenography Jul. 12, 1977

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