US Patent: D28,868 - Design for a ball-retainer


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US Patent: D28,868

Design for a ball-retainer

Patentee:

Henry B. Keiper (exact or similar names) - Lancaster, PA

USPTO Classifications:

Tool Categories:

metalworking machines : metalworking machine mechanisms

Assignees:

John Hertzler - Lancaster, PA

Henry B. Keiper - Lancaster, PA

Manufacturer:

Champion Blower & Forge Co. - Lancaster, PA

Witnesses:

Joseph C. Stack

Charles E. Riordan

Patent Dates:
Applied:	May 17, 1898
Granted:	Jun. 14, 1898

Patent Pictures:

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Vintage Machinery entry for Champion Blower & Forge Co.

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