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US Patent: 741,685
Lock
Patentee:
Frank W. Lindgren (exact or similar names) - Rockford, IL

USPTO Classifications:
292/147, 70/344, 70/81, 70/86

Tool Categories:
hardware : locks
transportation : canals : locks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. Behel
A. O. Behel
Patent Dates:
Applied: May 18, 1903
Granted: Oct. 20, 1903

Patent Pictures:
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