| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Measurement | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Clutches and brakes | |
| #3 | Weighing | |
| #4 | Nails | |
| #5 | Unspecified technologies | |
| #6 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fromhold Alexander | 6 |
| #2 | Knebel Herman C | 2 |
| #3 | Larson Alvin R | 2 |
| #4 | Washburn Loring | 1 |
| #5 | Fien Alphonsus | 1 |
| #6 | Walsh William L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3070831A | Sash balance connector | |
| US1240193A | Metal window construction. | |
| US1096294A | Metal window construction. | |
| US1096295A | Metal window construction. | |
| US1049223A | Hollow-metal window construction. | |
| US996846A | Window construction. | |
| US996845A | Metallic window-frame, &c. | |
| CA322108A | Window closing device | |
| CA605391A | Window structures | |
| CA564246A | Metallic window sash | |
| CA326409A | Metal window | |
| CA573585A | Metallic window structures | |
| CA680366A | Adjustable foot |