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US Patent: 1,317,320
Jack
Patentee:
Jacob B. Rose (exact or similar names) - Cleveland, OH

USPTO Classifications:
29/220

Tool Categories:
specialty tools : valve spring tools

Assignees:
Marvel Accessories Manufacturing Company - Cleveland, OH

Manufacturer:
Not known to have been produced

Witnesses:
Geo. E. Kricker
Patent Dates:
Applied: Oct. 31, 1917
Granted: Sep. 30, 1919

Patent Pictures:
Jacob B. Rose patent Sept. 30, 1919
USPTO (New site tip)
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Description:
"Over center" locking lever device for compressing engine valve springs.

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