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US Patent: 154,738
Improvement in Watch Keys
Patentees: Frank E. Williams (exact or similar names) - Duluth, MN Henry E. Cook (exact or similar names) - Duluth, MN USPTO Classifications: 510/494 Tool Categories: trade specific : watchmaker Assignees: None Manufacturer: Kendrick & Davis - Lebanon, MA Witnesses: Edward P. Parker Lyman M. Spalding	Patent Dates: Applied: May 09, 1874 Granted: Sep. 01, 1874 Patent Pictures: [ 1 | 2 | 3 | 4 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin "Vintage Machinery" entry for Kendrick & Davis
Description: Patent relates to the slots in the square tube of the key to keep dust and lint from building up around the watch stem cases. Example is a bench key marked 'Pat. Sept. 1, 1874

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