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US Patent: 1,206,164
Valve Grinding Tool
Patentee:
Joseph M. Stryhal (exact or similar names) - Washington, DC

USPTO Classifications:
451/117

Tool Categories:
specialty tools : valve grinding tools

Assignees:
None

Manufacturer:
Hudson Motor Specialties Company - Philadelphia, PA

Witnesses:
R. M. Smith
E. R. Ruppert
Patent Dates:
Applied: Jul. 28, 1916
Granted: Nov. 28, 1916

Patent Pictures: [ 1 | 2 ]
Joseph M. Stryhal patent Nov. 28, 1916
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Description:
"Universal joint" connecting the shank and head allows for valve lapping in relatively awkward locations.

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