Category:Hypo helmet

**Hypo helmet**
	gas mask headgear used in World War I
	Upload media
	Wikipedia
Instance of	gas mask;
Discoverer or inventor	Cluny Macpherson;
Time of discovery or invention	May 1915;
Total produced	2,500,000;
Authority file
	Q16985402;
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

Media in category "Hypo helmet"

The following 2 files are in this category, out of 2 total.