Patent
   D312682
Priority
Jan 19 1988
Filed
Jan 19 1988
Issued
Dec 04 1990
Expiry
Dec 04 2004
Assg.orig
Entity
unknown
0
2
n/a
The ornamental design for a heater for plastic or polyvinyl chloride conduit, as shown and described.

FIG. 1 is a left front perspective of a heater for plastic or polyvinyl chloride conduit, showing our new design;

FIG. 2 is a front elevational view, thereof;

FIG. 3 is a rear elevational view, thereof;

FIG. 4 is a top plan view, thereof;

FIG. 5 is a bottom plan view, thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a right end elevational view thereof; and

FIG. 8 is a front elevational view thereof, with the conduit support subframe in extended condition.

The representation of the piece of polyvinyl chloride conduit shown in broken lines in FIG. 8 is included solely for purposes of illustration, and forms no part of the claimed design.

Kirkes, Michael D., Wallace, Steven P.

Patent Priority Assignee Title
Patent Priority Assignee Title
4052593, Jun 23 1975 Electric heating apparatus for heating thermoplastic articles
4749843, Oct 14 1986 COAST BUSINESS CREDIT, A DIVISION OF SOUTHERN PACIFIC BANK Enveloping radiant heater
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