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US Patent: 2,622,128
Growler type testing device
Patentee: Penrose E. Chapman (exact or similar names) - St. Louis, MO USPTO Classifications: 310/25, 324/545 Tool Categories: electrical devices Assignees: P. E. Chapman Electrical Works, Inc. - St. Louis, MO Manufacturer: P. E. Chapman Electrical Works, Inc. - St. Louis, MO Witnesses: Unknown	Patent Dates: Applied: Jul. 11, 1949 Granted: Dec. 16, 1952 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for P. E. Chapman Electrical Works, Inc.
Description: Improvement to the growler of patent 1,924,913 to provide a cam-based fine adjustment.

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