1
He took out patents for all sorts of ingenious contrivances, but always lost money.
2
Although Eli Whitney took out patents, every planter infringed them.
3
In 1887 A. Minet took out patents for electrolysing a mixture of sodium chloride with aluminium fluoride, or with natural or artificial cryolite.
4
Alexander St. Michel kept up his character for fecklessness through life, and took out patents for curing smoking chimneys, purifying water, and moulding bricks.