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US Patent: 359,019
Rock Drill
Patentee:
John C. Hyndman - Mound Valley, Labette County, KS

USPTO Classifications:
173/148, 173/32, 408/129, 408/72R

Tool Categories:
specialty tools : stoneworking tools : quarrying tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 03, 1886
Granted: Mar. 08, 1887

Patent Pictures:
USPTO pdf tiff
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