US Patent: 997,920 - Ball and roller bearing


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US Patent: 997,920

Ball and roller bearing

Patentee:

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

USPTO Classifications:

Tool Categories:

industrial machines : industrial machine mechanisms : industrial machine bearings

Assignees:

None

Manufacturer:

Champion Blower & Forge Co. - Lancaster, PA

Witnesses:

Charles E. Long

Lola Van Gieson

Patent Dates:
Applied:	Apr. 18, 1910
Granted:	Jul. 11, 1911

Patent Pictures:

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Vintage Machinery entry for Champion Blower & Forge Co.

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