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Propane fired heater for defrosting frozen pipes or the like |
| D315597 |
Propane fired heater for defrosting frozen pipes or the like
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| Patent Drawings: |   
(3 images) |
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| Inventor: |
Botheras, et al. |
| Date Issued: |
March 19, 1991 |
| Application: |
07/247,305 |
| Filed: |
September 21, 1988 |
| Inventors: |
Botheras; Del (Sundre, Alberta), Colenutt; Wayne C. (Sundre, Alberta, CA)
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| Assignee: |
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| Primary Examiner: |
Gandy; James M. |
| Assistant Examiner: |
Lichtenstein; Lisa |
| Attorney Or Agent: |
Davis, Bujold & Streck |
| U.S. Class: |
D23/332 |
| Field Of Search: |
D23/314; D23/332; 219/366; 219/367; 219/368 |
| International Class: |
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| U.S Patent Documents: |
3189727; 3692977; 4511787 |
| Foreign Patent Documents: |
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| Other References: |
Grainger's Wholesale Net Price Cat., Spring 1986, p. 1178 A Propane Convection Heater No. 2E427, right lower side of page.. |
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| Abstract: |
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| Claim: |
The ornamental design for a propane fired heater for defrosting frozen pipes or the like, as shown. |
| Description: |
FIG. 1 is a top, front, and left side perspective view of a propane fired heater for defrosting frozen pipes or the like, showing our new design;
FIG. 2 is a top plan view thereof on a reduced scale;
FIG. 3 is a left side elevation view thereof on a reduced scale;
FIG. 4 is a front elevation view thereof on a reduced scale;
FIG. 5 is a right side elevation view thereof on a reduced scale;
FIG. 6 is a rear elevation view thereof on a reduced scale; and
FIG. 7 is a bottom plan view thereof on a reduced scale.
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