| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 22 | |
| #2 | France | 2 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Audio-visual technology | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Unspecified technologies | |
| #3 | Advertising | |
| #4 | Winches | |
| #5 | Transport or storage devices | |
| #6 | Nails | |
| #7 | Elevators and escalators | |
| #8 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Davidson Frederic A | 14 |
| #2 | Geer Hobart S | 4 |
| #3 | Eugene Pitou | 2 |
| #4 | Frank Peterson | 1 |
| #5 | Armstrong Davidson Frederick | 1 |
| #6 | Johnston Frank B | 1 |
| #7 | Pitou Eugene | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1887487A | Hoisting device | |
| US1959129A | Cable anchoring device | |
| US1919016A | Scaffolding | |
| US1886793A | Chute structure | |
| US1833484A | Hoisting device | |
| US1835473A | Coupling device | |
| US1898343A | Dirt chute | |
| US1829739A | Apparatus for use in setting building stone | |
| US1799959A | Hoistway inclosure | |
| US1830385A | Safety gate for hoisting inclosures | |
| US1830094A | Coupling device | |
| US1776785A | Supporting means for advertising signs | |
| US1801904A | Scaffold stage | |
| US1762572A | Coupling device | |
| US1706215A | Adjustable coupling means | |
| US1740958A | Landing stage | |
| US1710693A | Clamp | |
| US1714298A | Framed structure and fitting therefor | |
| US1662859A | Clamp | |
| US1706147A | Coupling device |