| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Germany | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Hinges for doors or windows | |
| #2 | Indexing scheme relating to hinges | |
| #3 | Unspecified technologies | |
| #4 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Algot Larson | 3 |
| #2 | Gency William E | 3 |
| #3 | Durland Gerret T K | 1 |
| #4 | Larson Alvin R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB819094A | Adjustable foot mechanism for sash balances | |
| GB791879A | Adjustable foot mechanism for sash balances | |
| US2917606A | Fire alarm | |
| US2826781A | Adjustable foot mechanism for sash balances | |
| GB788691A | Sash balance connectors | |
| US1926951A | Window-sash balance | |
| US1910112A | Window sash balance | |
| US1864745A | Window sash ralance | |
| CA577141A | Adjustable foot mechanism for sash balances | |
| CA577080A | Adjustable foot mechanism for sash balances | |
| CA552452A | Sash balance connectors |