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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
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CPC
COOPERATIVE PATENT CLASSIFICATION
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PITCHING OR DEPITCHING MACHINES; CELLAR TOOLS (cleaning of casks B08B 9/00) [2013‑01]
C12L 3/00
Pitching or depitching machines [2013‑01]
C12L 9/00
Venting devices for casks, barrels, or the like [2013‑01]
C12L 11/00
Cellar tools [2013‑01]
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Last Modified: 10/10/2013