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US Patent: 454,391
Speed Recorder and Register
Patentee:
Edmond Verstraete (exact or similar names) - St. Louis, MO

USPTO Classifications:
346/136, 346/73, 368/10, 73/491

Tool Categories:
industrial tools : rpm speed gauges and tachometers
industrial machines : industrial recording apparatus

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. M. Ebersole
J. M. Marot
E. J. Knight
George E. Cruse

Patent Dates:
Applied: Jul. 07, 1890
Granted: Jun. 16, 1891

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