Patent 4,928,625

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Pendulum Mounted Airbrush; W. A. Woods, 1990

An interesting idea; painting harmonograms directly onto T-shirts. (I'll bet somebody somewhere has a basement full of ruined T-shirts...)  


I know of no Harmonograph related patents registered after 1990; if you happen to come across one, please bring it to my attention so I may add it to the list!  


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