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US Patent: 1,252,375
Drilling Apparatus
Patentee: George H. Gilman (exact or similar names) - Claremont, NH USPTO Classifications: 173/103, 173/108, 173/112, 173/157, 173/92, 173/97 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: E. J. Bourchard C. J. Jones	Patent Dates: Applied: Jul. 05, 1912 Granted: Jan. 01, 1918 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Also see patent #1252374.

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