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US Patent: 1,442,174
Power Means for Screw Driver or the Like
Patentee:
Henry F. Oberjohann (exact or similar names) - Toledo, OH

USPTO Classifications:
81/177.6, 81/58.3

Tool Categories:

Assignees:
Henry F. Oberjohann - Toledo, OH
Clayton E. Cheesman - Dayton, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 12, 1921
Granted: Jan. 16, 1923

Patent Pictures:
USPTO (New site tip)
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