USD253704SExpiredUtility

Flapper valve housing for a concrete pump or the like

66
Assignee: THOMSEN EQUIPMENT COPriority: May 20, 1977Filed: May 20, 1977Granted: Dec 18, 1979
Est. expiryMay 20, 1997(expired)· nominal 20-yr term from priority
Inventors:John T. Mcgraw
66
PatentIndex Score
10
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a flapper valve housing for a concrete pump or the like, substantially as shown.

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