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US Patent: 2,558,938
Heat Pump and Control Means
Patentees:
Earnest J. Dillman (exact or similar names) - Detroit, Wayne County, MI
Thomas E. Noakes (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
236/1R, 62/160, 62/509

Tool Categories:
specialty machines : heating apparatus
specialty machines : refrigeration apparatus

Assignees:
Detroit Lubricator Co. - Detroit, Wayne County, MI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 30, 1948
Granted: Jul. 03, 1951

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Detroit Lubricator Co.

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