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US Patent: 1,917,022
Electrochemical Process for Cleaning Metal
Patentee:
Thomas E. Dunn (exact or similar names) - Bridgeport, CT

USPTO Classifications:
205/440

Tool Categories:

Assignees:
Bullard Co. - Bridgeport, CT

Manufacturer:
Bullard Co. - Bridgeport, CT

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 28, 1932
Granted: Jul. 04, 1933

Patent Pictures:
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Vintage Machinery entry for Bullard Machine Tool Co.

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