USD315596SExpiredUtility

Propane fired heater for defrosting frozen pipes or the like

Assignee: BOTHERAS DELPriority: Mar 23, 1988Filed: Sep 21, 1988Granted: Mar 19, 1991

Est. expiryMar 23, 2008(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a propane fired heater for defrosting frozen pipes or the like, as shown.

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