Image:Stephens TOF.gif

From Wikipedia, the free encyclopedia

Wikimedia Commons logo This is a file from the Wikimedia Commons. The description on its description page there is shown below.
Commons is a freely licensed media file repository. You can help.
Description

Stephens time-of-flight mass spectrometer patent

Patent number: 2612607

Filing date: Apr 5, 1947

Issue date: Sep 1952

Inventor: William E. Stephens

Source

United States Patent and Trademark Office

Date

1952

Author

USPTO

Permission
(Reusing this image)

see below


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. (This template can be replaced by {{PD-US-patent-no notice}} in such cases.)

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeDimensionsUserComment
current21:52, 16 April 20082,134×1,199 (31 KB)Kkmurray ({{Information |Description= Stephens time-of-flight mass spectrometer patent Patent number: 2612607 Filing date: Apr 5, 1947 Issue date: Sep 1952 Inventor: William E. Stephens |Source=United States Patent and Trademark Office |Date=1952 |Author= USPT)
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):