File:United States patent 1233841.pdf
Original file (1,158 × 1,702 pixels, file size: 439 KB, MIME type: application/pdf, 6 pages)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
Elmer E. Bucher: Means for Receiving Electrical Oscillations
   |
||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Author |
|
 | ||||||||||||||||||
| Title |
Means for Receiving Electrical Oscillations  |
|||||||||||||||||||
| Object type |
version, edition or translation / digital representation / digital media |
|||||||||||||||||||
| Description |
United States patent |
|||||||||||||||||||
| Language |
English |
|||||||||||||||||||
| Publication date |
17 July 1917 |
|||||||||||||||||||
| Object history |
|
|||||||||||||||||||
| Source | https://patents.google.com/patent/US1233841A/en | |||||||||||||||||||
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.  |
 |
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.)
|
 |
This file is in PDF format.
Portable Document Format (PDF) is a file format created by Adobe Systems for document exchange. PDF is used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system. Each PDF file encapsulates a complete description of a fixed-layout 2D document that includes the text, fonts, images, and 2D vector graphics which compose the documents. The best way to view PDF files is locally using a reader.Several free readers for every system are available at pdfreaders.org. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:49, 4 September 2024 |  | 1,158 × 1,702, 6 pages (439 KB) | RaboKarbakian | {{Book |Description=United States patent |Source=https://patents.google.com/patent/US1233841A/en |Image page = 4 |other_versions= |wikidata = Q128826272 }} {{PD-scan|PD-US-expired}} {{PD-US-patent}} {{PDF}} zz |
File usage
The following 4 pages use this file:
Global file usage
The following other wikis use this file:
- Usage on www.wikidata.org