| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Unspecified technologies | |
| #3 | Shafts | |
| #4 | Belts or cables for driving | |
| #5 | Swimming pools | |
| #6 | Hydraulic engineering | |
| #7 | Containers for goods storage | |
| #8 | Shaping clay | |
| #9 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Markham Charles M | 29 |
| Publication | Filing date | Title |
|---|---|---|
| US2256620A | Adjustable shore | |
| US2003635A | Beam hanger | |
| US1825912A | Shore head bracket | |
| US1842684A | Column clamp | |
| US1842683A | Shore attachment | |
| US1783622A | Timber splicer | |
| US1847660A | Adjustable shore | |
| US1782903A | Adjustable shore | |
| US1692675A | Column clamp | |
| US1651610A | Adjustable shore | |
| US1430576A | Round-column-clamp tightener | |
| US1491353A | Brace clamp | |
| US1510950A | Round column clamp | |
| US1401172A | Jack-actuating lever | |
| US1374598A | Concrete salvage jack-head | |
| US1410698A | Lifting jack | |
| US1349576A | Adjustable jack or shore | |
| US1270965A | Column-clamp. | |
| US1081243A | Lifting-jack. | |
| US1128809A | Girder-form support. |