Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 1,001,471
Micrometer Calipers
Direct-Reading Micrometer
Patentee:
Frank Spaulding - Providence, RI

USPTO Classifications:
33/819

Tool Categories:
layout tools : measurement gauges

Assignees:
Brown & Sharpe Mfg. Co. - Providence, RI

Manufacturer:
Not known to have been produced

Witnesses:
Ada E. Haggerty
J. A. Miller
Annie F. Miller

Patent Dates:
Applied: Jun. 27, 1909
Granted: Aug. 22, 1911

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
"Vintage Machinery" entry for Brown & Sharpe Mfg. Co.
Description:
This micrometer uses a series of internal gears to display the measurement as numbers instead of using a vernier.

Copyright © 2002-2020 - DATAMP