File:Zobel original drawing.PNG
Original file (1,528 × 406 pixels, file size: 88 KB, MIME type: image/png)
Captions
Summary
[edit]DescriptionZobel original drawing.PNG |
English: Impedance matching circuit showing m-derived topology. |
Date |
13 October 1925 11 April 2008 (original upload date) |
Source |
US Patent 1557229 Transferred from en.wikipedia to Commons by Wdwd using CommonsHelper. |
Author |
O J Zobel The original uploader was Spinningspark at English Wikipedia. |
Licensing
[edit]Public domainPublic domainfalsefalse |
In general, the contents of United States patents are in the public domain.
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 (see 37 CFR 1.71(d) & (e) and 37 CFR 1.84(s), and MPEP § 608.01(e) & (w) and MPEP § 1512):
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.) |
Original upload log
[edit]- 2008-04-12 01:16 Spinningspark 1528×406× (89872 bytes)
- 2008-04-11 00:20 Spinningspark 1539×405× (27854 bytes) Author: O J Zobel Source: US Patent 1557229 {{PD-US-patent}}
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:09, 15 June 2024 | 1,528 × 406 (88 KB) | OgreBot (talk | contribs) | (BOT): Reverting to most recent version before archival | |
10:08, 15 June 2024 | 1,539 × 405 (27 KB) | OgreBot (talk | contribs) | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2008-04-11 00:20:56 by Spinningspark | ||
18:59, 16 January 2011 | 1,528 × 406 (88 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Impedance matching circuit showing m-derived topology}} |Source=Transferred from [http://en.wikipedia.o |
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