| D282870 |
Air-to-air heat exchanger
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| Patent Drawings: | |
| Inventor: |
Benning, et al. |
| Date Issued: |
March 4, 1986 |
| Application: |
06/448,930 |
| Filed: |
December 13, 1982 |
| Inventors: |
Benning; L. (Humboldt, CA)
Novecosky; E. (Humboldt, CA)
Van Ee; D. (Humboldt, CA)
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| Assignee: |
Del-Air Systems Ltd. (Humboldt, CA) |
| Primary Examiner: |
Kemper; Catherine E. |
| Assistant Examiner: |
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| Attorney Or Agent: |
Ade; Stanley G.Battison; Adrian D. |
| U.S. Class: |
D23/314 |
| Field Of Search: |
D23/136; D23/139; D23/141; D23/143; D23/151; D23/155; 62/262; 62/324.1 |
| International Class: |
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| U.S Patent Documents: |
D164937; D275603; 2719410; 3602006 |
| Foreign Patent Documents: |
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| Other References: |
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| Abstract: |
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| Claim: |
The ornamental design for air-to-air heat exchanger, as shown and described. |
| Description: |
FIG. 1 is a front elevational view of an air-to-air heat exchanger, showing our new design.
FIG. 2 is a plan view thereof.
FIG. 3 is a left elevational view thereof;
FIG. 4 is a right elevational view thereof;
FIG. 5 is a rear view thereof.
FIG. 6 is a bottom plan view thereof.
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