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US Patent: 352,721
Level Attachment for Boring Tools
Stanley No 44 Bit and Square Level
Justus A. Traut - New Britain, CT

USPTO Classifications:
33/334, 33/371, 408/16, 81/28

Tool Categories:
layout tools : levels
woodworking tools : hand drills : drill accessories

The Stanley Rule & Level Co. - New Britain, CT

The Stanley Rule & Level Co. - New Britain, CT

H. S. Walter
F. N. Stanley

Patent Dates:
Applied: Jul. 03, 1886
Granted: Nov. 16, 1886

Patent Pictures: [ 1 | 2 ]
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Level attaches to the drill bit shank and can be set at any angle. Traut acknowledges other patents and mentions Patent No. 92927 specifically.

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