![File:Hettinger's Aerial Conductors for Wireless Signaling US1309031A.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Hettinger%27s_Aerial_Conductors_for_Wireless_Signaling_US1309031A.jpg/408px-Hettinger%27s_Aerial_Conductors_for_Wireless_Signaling_US1309031A.jpg)
Size of this preview: 408 × 599 pixels. Other resolutions: 163 × 240 pixels | 564 × 828 pixels.
Original file (564 × 828 pixels, file size: 47 KB, MIME type: image/jpeg)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:39, 8 July 2019 | ![]() | 564 × 828 (47 KB) | Thats Just Great | {{Information |description=Hettinger's Aerial Conductors for Wireless Signaling |date=July 8, 1919 |source=[https://patents.google.com/patent/US1309031 Hettinger's Aerial Conductors for Wireless Signaling US1309031] |author= J. Hettinger |permission={{PD-USGov}} |other versions= }} Category:U.S. Patent drawings |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on bg.wikipedia.org
- Usage on fr.wikipedia.org