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US Patent: 493,471
Drilling Machine
Patentee:
Alfred Betts - Wilmington, DE

USPTO Classifications:
269/60, 451/411

Tool Categories:
metalworking machines : drilling and boring : horizontal boring mills

Assignees:
Betts Machine Co. - Wilmington, DE

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 23, 1892
Granted: Mar. 14, 1893

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Betts Machine Co.

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