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US Patent: 320,366
Anti-friction wheel or roller
Patentee:
Wayne Kratzer - Allentown, PA

USPTO Classifications:
384/565

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine bearings

Assignees:
Wayne Kratzer - Allentown, PA
Charles Ziegenfus - Lehigh County, PA
F. A. S. Helverson - Lehigh County, PA

Manufacturer:
Wayne Kratzer - Allentown, PA

Witnesses:
T. M. Ely
Samuel P. Swartz

Patent Dates:
Granted: Jun. 16, 1885

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Wayne Kratzer

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