Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 44,225
Improvement in Spirit-Levels
Patentee:
H. S. Shepardson - Shelburne Falls, MA

USPTO Classifications:
33/282, 33/388

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. W. Reed
J. W. Coombs
W. H. Maynard
F. R. Pratt

Patent Dates:
Granted: Sep. 13, 1864

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
This patent covers an "infill" level, consisting of a cast metal frame with wood inlaid into the sides. This will prevent the level from warping, and make it lighter.

The patent text also mention a new kind of adjustment for he vial, but this is not present in the claims, and so was probably rejected.

Copyright © 2002-2017 - DATAMP