(under subclass 501) Subject matter wherein the projectile has means to lubricate the bore of a gun.
(1) Note. The lubricating is for minimizing the effect of drag.
SEE OR SEARCH THIS CLASS, SUBCLASS:
366, for means to distribute oil for quieting waves.
SEE OR SEARCH CLASS
508, Solid Antifriction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions, for lubricant compositions or for projectiles claimed by name only but which are recited solely in terms of the lubricating composition of which it is composed even if there is no claim to the composition, per se.
