Browse 270+ police patch design stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Set of police law enforcement ...

this patch guide engages creative use of aerial imagery as an urban design tool [6]. In addition it explores open source and creative commons approaches, given that imagery may not be free forever or ...

But every would-be microwave designer has to start somewhere, and for [Adam Gulyas] that start came with a 2.4 GHz patch antenna. His write-up is a fascinating tale of the challenges and pitfalls ...