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US Patent: D115,416
Torque Indicating Tool
Patentee:
Siegmund Mandl - Milwaukee County, WI

USPTO Classifications:
D8/24

Tool Categories:
wrenches : torque wrenches

Assignees:
Blackhawk Manufacturing Company - Milwaukee, WI

Manufacturer:
Blackhawk Manufacturing Company - Milwaukee, WI

Witnesses:
none listed

Patent Dates:
Applied: May 10, 1939
Granted: Jun. 27, 1939

Patent Pictures: [ 1 | 2 ]
Siegmund Mandl design patent June 27, 1939
USPTO pdf tiff
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Description:
A bar type torque wrench.

Design matches BLACKHAWK TORKFLASH torque wrench -- the indicator scale rotates to show torque for common bolt sizes, foot pounds, etc.

Term of patent 3 1/2 years.

Morsell, Lieber & Morsell - patent attorneys

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