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Filter: Subject of metal industry
| Date: | 09 1926 |
|---|---|
| Description: | Column failure testing at the University of Wisconsin Engineering Laboratory. |
| Date: | 11 05 1954 |
|---|---|
| Description: | Man operating a ventilator testing cabinet at W.R. Carnes Company. |
| Date: | 10 08 1953 |
|---|---|
| Description: | Display of Research Products Corporation Filter Fry frying pan covers in a grocery cart. |
| Date: | 01 11 1954 |
|---|---|
| Description: | A man displaying a Research Products Corporation rack for Filter Fry frying pan covers, "Takes the spatter out of kitchen frying." |
| Date: | 04 12 1954 |
|---|---|
| Description: | Workman riveting two filter frames together horizontally. Taken for Research Products, 1011-1015 East Washington Avenue. |
| Date: | 04 12 1954 |
|---|---|
| Description: | Workman riveting filter frames together in a L shape, taken for Research Products, 1011-1015 East Washington Avenue. |
| Date: | 11 05 1954 |
|---|---|
| Description: | Man operating a ventilator testing cylinder at W.R. Carnes Company. |
| Date: | 11 05 1954 |
|---|---|
| Description: | Man standing on a platform ladder adjusting a ceiling ventilator in the testing room at W.R. Carnes Company, wide angle view. |
| Date: | |
|---|---|
| Description: | Photomicroscopic view of iron, with notes on physical properties. |
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