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US Patent: 165,662
Improvement in spark-arresters
Patentee:
John Du Bois (exact or similar names) - Williamsport, PA

USPTO Classifications:
55/289, 55/400, 55/DIG.02

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. H. Poole
J. B. Woodruff
Patent Dates:
Applied: Jun. 16, 1875
Granted: Jul. 20, 1875

Patent Pictures:
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