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US Patent: 1,812,369
Projecting Mechanism and Gear Staging Device
Patentees:
Russell W. Porter (exact or similar names) - Springfield, Windsor County, VT
Robert O. Beardsley (exact or similar names) - Springfield, Windsor County, VT

USPTO Classifications:
33/501.17

Tool Categories:
metalworking machines : gear measuring machines

Assignees:
Jones & Lamson Machine Co. - Springfield, Windsor County, VT

Manufacturer:
Jones & Lamson Machine Co. - Springfield, Windsor County, VT

Witnesses:
Unknown

Patent Dates:
Applied: May 03, 1923
Granted: Jun. 30, 1931

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Jones, Lamson & Co.

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