A stonecutter's hammer with a head consisting of broad thin chisels clamped together.

plural of patent hammer

plural of patent medicine

plural of patent log

plural of patent leather

plural of submarine patent

(US, Canada) An exclusive grant of land made by a sovereign entity with respect to a particular tract of land.

plural of land patent

A grant to an individual by letters patent of a higher social or professional position than the precedence to which their ordinary rank entitles them.

plural of patent of precedence