(under the class definition) Apparatus in which a substantially undisturbed sample of the formation is covered or coated with (1) a material which is fed into the sample receiver and applied to the sample as the sample is being taken to enclose or form a cover therefor or (2) a fluent material which is applied to the sample to enclose or coat a portion thereof.
(1) Note. The fluent material under part (2) must be some fluent material other than the drilling fluid.
