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US Patent: D41,896
Design for a Screw Driver
Patentee: Elmer S. Roberts (exact or similar names) - Philadelphia, PA USPTO Classifications: D8/82, D8/DIG8 Tool Categories: screwdrivers Assignees: Henry Disston & Sons, Inc. - Philadelphia, PA Manufacturer: Unknown Witnesses: E. B. Roberts W. C. Burkholder	Patent Dates: Applied: Jun. 24, 1911 Granted: Nov. 07, 1911 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin "Vintage Machinery" entry for Henry Disston & Sons
Description: This design was used on the Insulate, No.50, screwdriver. hard rubber handle was particularly suite for Electricians.

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