Citrus fruit variety to be patented for the first time is

The citrus fruit variety is to be patented for the first time in Ruby.
The 1929 U.S. 'Ruby Red' (of the 'Redblush' variety) was the first grapefruit patent. The 1929 'Ruby Red' patent was associated with real commercial success, which came after the discovery of a red grapefruit growing on a pink variety.
These are slightly flattened, globular-shaped fruits with yellow-orange rinds and a sweet, tart flavour profile. This summer citrus tree bears fruit from mid-June to mid-September, making them a popular late summer treat to beat the heat.