| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Mechanical elements | |
| #5 | Agriculture | |
| #6 | Materials and metallurgy | |
| #7 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zwermann Carl H | 21 |
| Publication | Filing date | Title |
|---|---|---|
| US1869401A | Combination closet bowl and tank structure | |
| US1933518A | Water-closet structure | |
| US1275352A | Kiln. | |
| US1216390A | Kiln construction. | |
| US1176695A | Valve mechanism. | |
| US1117617A | Flush-tank valve of the diaphragm type. | |
| CA157913A | Valve for flush tanks | |
| US1097501A | Flush-tank valve of the diaphragm type. | |
| US1173631A | Closet-tank and connections. | |
| US1067894A | Tank-casing. | |
| US1067893A | Flushing-tank. | |
| US1059423A | Milk-can. | |
| US1059424A | Milk-can. | |
| US963198A | Lining for refrigerators. | |
| US964729A | Float. | |
| US943131A | Flushing device. | |
| US1032317A | Flushing-tank. | |
| US932530A | Tank. | |
| US921780A | Sheet-metal tank. | |
| US707490A | Enamel-sifting apparatus. |