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US Patent: 1,376,687
Elevator Locking Device
Patentee:
Albert F. Froussard (exact or similar names) - St. Louis, MO

USPTO Classifications:
187/307

Tool Categories:
specialty machines : elevators and lifts

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 05, 1920
Granted: May 03, 1921

Patent Pictures:
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