Image:HartnessComparator.jpg

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[edit] Summary

Description U.S. Patent Office

Patent drawings (edited for simplicity) of optical comparator invented by James Hartness and Russell Porter
Source

Patent #1,703,933
Date

March 5, 1929
Author

Hartness, James and Porter, Russell
Permission
(Reusing this image)

U.S. Patent (expired)

[edit] Licensing:

may or may not be in the public domain In general, the contents of United States patents are in the public domain.[1]

In specific cases, patent applicants and holders may claim copyright in portions of those documents. In those specific cases, applicants are required to identify the portions that are protected under copyright, and are additionally required to state the following within the body of the application and patent:[2] [3]

A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

The original patent should be checked for the presence of such language before an assumption is made that the contents are in the public domain.

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current01:27, 13 April 20081,079×658 (248 KB)HopsonRoad (Talk | contribs) ({{Information |Description=Patent drawings of optical comparator invented by James Hartness and Russell Porter |Source=Patent #1,703,933 |Date=March 5, 1929 |Location=U.S. Patent Office |Author=Hartness, James and Porter, Russell |Permission=Work of U.S. )

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Width 800
Height 1143
Compression scheme 5
Pixel composition RGB
Orientation Normal
Number of components 4
Horizontal resolution 72 dpi
Vertical resolution 72 dpi
Data arrangement chunky format
Software used Adobe Photoshop CS3 Macintosh
File change date and time 21:19, 12 April 2008
Author Stephen Flanders
Color space 65535