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Friction furnace |
| D297045 |
Friction furnace
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| Patent Drawings: | |
| Inventor: |
Powell |
| Date Issued: |
August 2, 1988 |
| Application: |
06/776,608 |
| Filed: |
September 16, 1985 |
| Inventors: |
Powell; Louis D. (Des Moines, IA)
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| Assignee: |
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| Primary Examiner: |
Kemper; Catherine E. |
| Assistant Examiner: |
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| Attorney Or Agent: |
Henderson & Sturm |
| U.S. Class: |
D23/329 |
| Field Of Search: |
126/247; 122/26; 237/12; 237/1R; 237/50; 237/1SL; 237/12.3R; 237/12.3A; 237/12.1; D23/329 |
| International Class: |
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| U.S Patent Documents: |
4365614; 4407449; 4412651 |
| Foreign Patent Documents: |
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| Other References: |
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| Abstract: |
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| Claim: |
The ornamental design for a friction furnace, as shown and described. |
| Description: |
FIG. 1 is a top plan view of a friction furnace, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a rear elevational view thereof; and
FIG. 5 is a left side elevational view thereof.
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