U.S. patents covering time keeping mechanisms
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Author
Publication
1892 - United States Patent Office, Washington, District of Columbia
Language
English
Word Count
0 words, Guess
Page Count
0 pages
Identifiers
- Internet Archiveuspatentscoverin01unit
- OCLC Control Number34706062
- Open LibraryOL25104890M
Alternate Titles
- United States patents covering time keeping mechanisms
- Time keeping mechanisms
Description
Includes patents dated from April 1892-May 1893.
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