USD249701SExpiredUtility

Water purification unit

90
Assignee: MAPLES PAUL DOUGLASPriority: Feb 2, 1977Filed: Feb 2, 1977Granted: Sep 26, 1978
Est. expiryFeb 2, 1997(expired)· nominal 20-yr term from priority
Inventors:Paul D. MaplesRalph E. RoppPeter P. Klepa
90
PatentIndex Score
50
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a water purification unit, as shown.

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