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Classifications » B - general horology - dictionaries, directories, patents, museum and individual collections, theory, calendars

Subclass Description
BA & BB DICTIONARIES, DIRECTORIES, PATENTS, COLLECTIONS OF ARTICLES
BC & BD MUSEUMS, EXHIBITS, COLLECTIONS
BF THEORY, PHILISOPHY OF TIME
BG CALENDARS, STANDARD TIME, LONGITUDE

Last Updated:  August 13, 2006  

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