USD338704SExpiredUtility

Cover for a pressurized sand filter

52
Assignee: POLTANK SAPriority: Jul 16, 1991Filed: Jul 16, 1991Granted: Aug 24, 1993
Est. expiryJul 16, 2011(expired)· nominal 20-yr term from priority
Inventors:Robert Garrigos Ruiz
52
PatentIndex Score
10
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a cover for a pressurized sand filter, as shown and described.

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