You may be referring to patterned sheet glass.
If so then the first US patent is 1894 by Charles W. Cuddon, Brownsville
Plate Glass Company, New Kensington, PA.
The glass is clearish and the texture looks like pressed or flattened brains.
ref:
Gwen J. Hurst
1996 U. S. Bottle Glass Chronology. Revised edition, privately published,
Honolulu, HI, pg. 17.