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US Patent: 3,207,934
Electric motor with improved cooling means
Patentees: Joseph W. Purman (exact or similar names) - Milwaukee, WI Bruce T. Hein (exact or similar names) - Milwaukee, WI Russell I. Robinson (exact or similar names) - Thiensville, WI USPTO Classifications: 310/57, 310/64, 310/90 Tool Categories: electrical devices : electric motors : motor cooling Assignees: Louis Allis Co. - Milwaukee, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 18, 1962 Granted: Sep. 21, 1965 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Louis Allis Co.
Description: These design improvements are intended for totally enclosed fan cooled (TEFC) motors in the 600 HP range.

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