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зонтичные патентыstresses
patents. patent thickets (Ушаков)
зонтичный патент
adv. umbrella patent
law umbrella patent
Makarov. umbrella patent (широкоохватный патент)
patents. blocking patent; blocking-off patent; fencing-off patent; obstructive patent
"зонтичный" патент
gen. umbrella patent