Helicopter Patent on Blackboard

Visually striking, these vintage patent prints feature sketches of a helicopter.This patent design is also available in Blueprint, Chalkboard, and Parchment styles. Choose from sizes that run from 5x7 inches all the way to 18x24 inches.

Download Large (11" x 17". PDF Format)
Download Medium (8.5" x 11". PDF Format)
Download Small (5" x 7". PDF Format)

Download Hi-Res Patent Design for $12.99 (18" x 24". JPG format)
Download Hi-Res Patent Design for $9.99 (16" x 20". JPG format)

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This patent design belongs to these categories: transportation

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