Original file (1,024 × 768 pixels, file size: 10 KB, MIME type: image/png)

Summary

Description
English: Drawing from the US Patent 1,356,763, Inventor Ralph V.L. Harley
Deutsch: Zeichnung aus dem US Patent 1,356,763, Erfinder Ralph V.L. Harley
Date
Source US-Pat_1,356,763
Author rainglaz

Licensing

Public domain The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.

Captions

2. Capacitor 3. and 4. Inductors 5. "[[Audion]]" triode vacuum tube 6. Heated Cathode 7. Plate(Anode) 8. Control Grid 9 and 10. Polarizing Batteries 11. Cathode Heater Battery

Items portrayed in this file

depicts

inception

26 October 1920Gregorian

data size

10,095 byte

height

768 pixel

width

1,024 pixel

media type

image/png

checksum

942e59930de73317a4d244a117bfc9747e86bed6

determination method or standard: SHA-1

File history

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Date/TimeThumbnailDimensionsUserComment
current14:21, 9 December 2008Thumbnail for version as of 14:21, 9 December 20081,024 × 768 (10 KB)Rainglasz{{Information |Description={{en|1=Drawing from the US Patent 1,356,763, Inventor Ralph V.L. Harley}} {{de|1=Zeichnung aus dem US Patent 1,356,763, Erfinder Ralph V.L. Harley}} |Source=US-Pat_1,356,763 |Author=rainglaz |Date=26.10.1920 |Permission= |other_

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