Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 297,574
Spirit Level
Patentee:
Leonard L. Davis - Springfield, MA

USPTO Classifications:
33/385

Tool Categories:
layout tools : levels : metallic levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Wm. H. Chapin
J. D. Garfield

Patent Dates:
Applied: Mar. 10, 1884
Granted: Apr. 29, 1884

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Four screws are used to hold and when necessary adjust the level spirit vial.

Copyright © 2002-2017 - DATAMP