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US Patent: 1,170,045
Tool For Truing, Cleansing, and Grinding Valves and Valve Seats
Patentee:
Arthur Albert Bull (exact or similar names) - Detroit, MI

USPTO Classifications:
451/430, 82/172

Tool Categories:
specialty tools : valve grinding tools

Assignees:
None

Manufacturer:
Hughes, Bull Co. - West Detroit, MI

Witnesses:
F. A. Harper
P. Hughes
V. Hughes
Patent Dates:
Applied: Apr. 03, 1915
Granted: Feb. 01, 1916

Patent Pictures: [ 1 | 2 ]
Arthur A. Bell patent February 1, 1916
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Description:
Valve facer and valve seat reamer for engine valves.

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