Category:Boeing XP-4

**XP-4**
	fighter aircraft prototype by Boeing
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Instance of	prototype aircraft model;
Subclass of	PW-9;
Country of origin	United States of America;
Based on	PW-9;
Manufacturer	Boeing;
First flight	1927;
Total produced	1 aircraft conversion;
Authority file
	Q2908555;
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XP-4 (variant of the PW-9 family of aircraft)
manufacturer: Boeing
country of origin: United States of America
first flight: 1927

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This category has only the following subcategory.