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US Patent: 650,795
Boring implement
Patentees:
George J. Spahn (exact or similar names) - Baltimore, MD
William T. Maxwell (exact or similar names) - Baltimore, MD

USPTO Classifications:
279/56, 279/91, 408/124, 408/138, 74/385, 81/37

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: May 29, 1900

Patent Pictures:
USPTO (New site tip)
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