patent still

British  

noun

1. a type of still in which the distillation is continuous

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Etymology

Origin of patent still

so called because a still of this type was patented in 1830

Example Sentences

Despite these more modest ambitions, the patent still includes a scathing rebuke of modern politics.

From The Verge

The modern version of this patent still remains in use at Patek Philippe, and the resulting timepieces are very much sought-after by collectors today – who will definitively scramble to get one of these unique watches called World Time Geneva Harbor.

From Forbes

Any U.S. researcher seeking a foreign patent still will have to be the first to file, he says, since other nations don't give inventors the 1-year grace period.

From Science Magazine

"No," he admitted, "not in the form that you have used it; but here is the trick that covers the principle, and this patent still has four years to run."

From Project Gutenberg

Commercially, even with its patent still protected, Aromasin was only a moderate seller in first quarter, with sales down 11 pct to $114 million.

From Reuters