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US Patent: 1,259,855
Rotary Drilling Apparatus
Patentee:
Edgar E. Greve (exact or similar names) - Bellevue, PA

USPTO Classifications:
464/163

Tool Categories:

Assignees:
Oil Well Supply Co. - Pittsburgh, PA

Manufacturer:
Not known to have been produced

Witnesses:
J. M. Geoghegan
Lois Wineman
J. Herbert Bradley

Patent Dates:
Applied: Jul. 14, 1917
Granted: Mar. 19, 1918

Patent Pictures:
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Description:
W. G. Doolittle - patent attorney

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