Category:United States patent 771819

**Wireless Signaling Apparatus**
	1904 patent to De Forest
	Upload media
Instance of	patent; United States patent;
Main subject	wireless telegraphy;
Author	Lee de Forest;
Discoverer or inventor	Lee de Forest;
Language of work or name	English;
Publication date	11 October 1904;
Authority file
	Q128623226;
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

Media in category "United States patent 771819"

This category contains only the following file.