Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 230,619
Graduated Measuring Rule
Patentee:
Samuel Darling - Providence, RI

USPTO Classifications:
33/490

Tool Categories:
rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John E. Hall
Chas. A. Campbell

Patent Dates:
Applied: Jun. 11, 1880
Granted: Aug. 03, 1880

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Metallic ruler with 45 degrees as the angle between the legs instead of the standard 60 degree construction. Also a line of pricks at an angle with the lines of graduation to allow divider to be set. Darling later references this patent in the text of patent 289,512.

Copyright © 2002-2019 - DATAMP