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US Patent: 1,173,460
Electric switch
Patentee: Carl A. Palmgren (exact or similar names) - Chicago, IL USPTO Classifications: 200/38R Tool Categories: electrical devices : electric switches Assignees: None Manufacturer: Not known to have been produced Witnesses: A. J. Drew D. V. Medalie	Patent Dates: Applied: Jul. 02, 1915 Granted: Feb. 29, 1916 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Palmgren Steel Products, Inc.
Description: This patent covers a timer-switch for controlling a pyrometer.

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