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Filter: Categories of Wisconsin Historical Images
Filter: Subject of Doors
Filter: Subject of outdoor photography
Filter: Creator Name of Schoelkopf, L. F.
| Date: | 1924 |
|---|---|
| Description: | View up ramp towards the "Auto Wash" entrance door of a brick building using the Air-lec pneumatic door opening system invented by Louis Schoelkopf. |
| Date: | 1922 |
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| Description: | Outdoor view of an Air-Lec automatic door opener for swinging doors set up on a wood plank on a rooftop. Probably the top of Schoelkopf's manufacturing pla... |
| Date: | 1922 |
|---|---|
| Description: | Air-Lec pneumatic automatic door opener set up on a table on a roof. Probably the roof of Schoelkopf's manufacturing plant at 320 N. Third Street. |
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