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US Patent: D57,812
Design for a housing for electric air compressors and motors
Patentees:
Alonzo G. Decker - Baltimore, MD
Samuel Duncan Black - Baltimore, MD

USPTO Classifications:
D15/9

Tool Categories:
industrial machines : pneumatic : air compressors

Assignees:
Second National Bank of Baltimore - Baltimore, MD

Manufacturer:
Black & Decker Manufacturing Co., Ltd - Towson, MD

Witnesses:
Emma Wehmeyer
Edwin R. Samuels

Patent Dates:
Applied: Jun. 06, 1919
Granted: May 10, 1921

Patent Pictures:
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"Vintage Machinery" entry for Black & Decker Manufacturing Co., Ltd.

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