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US Patent: 49,034
Improvement in rock-drills
Patentee:
Charles W. Johnson (exact or similar names) - Waterbury, CT

USPTO Classifications:
175/389, 175/413

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. M. Cate, Jr.
S. W. Kellogg

Patent Dates:
Granted: Jul. 25, 1865

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Blake & Johnson Co.
Description:
Of interest because of a very tentative connection to grinder maker Blake & Johnson.

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