File:Norton mechanical filter detail.png
Norton_mechanical_filter_detail.png (435 × 440 pixels, file size: 22 KB, MIME type: image/png)
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Summary
| Description |
English: A mechanical filter designed using electrical network theory |
| Date | 31st May 1929 (filed) |
| Source | US patent US1792655 |
| Author | w:Edward Lawry Norton cropped and refactored for better aspect ratio by SpinningSpark |
| Other versions | File:Norton mechanical filter.png |
Licensing
 |
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.)
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:45, 24 November 2009 | | 435 × 440 (22 KB) | Spinningspark | {{Information |Description=A mechanical filter designed using electrical network theory |Source=US patent US1792655 |Date=31st May 1929 (filed) |Author=Edward Lawry Norton cropped and refactored for better aspect ratio by ~~~ |other_versions=[[Norton |
