| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 177 | |
| #2 | Canada | 24 | |
| #3 | Germany | 4 | |
| #4 | France | 4 | |
| #5 | United Kingdom | 3 | |
| #6 | Austria | 2 | |
| #7 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Textiles and paper | |
| #6 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Pumps | |
| #4 | Unspecified technologies | |
| #5 | Pipes | |
| #6 | Siphons | |
| #7 | Venting or aerating devices | |
| #8 | Pistons and sealings | |
| #9 | Mechanical leather treatments | |
| #10 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crickmer Charles S | 27 |
| #2 | Wilson Robert A | 19 |
| #3 | Taylor Jr Raymond G | 17 |
| #4 | Davis Roy C | 16 |
| #5 | Losey Thomas B | 15 |
| #6 | Lane John J | 14 |
| #7 | Albert Pranger | 11 |
| #8 | Bell Ivan C | 10 |
| #9 | Standlee Harvey R | 10 |
| #10 | Thaheld Feri A | 8 |
| Publication | Filing date | Title |
|---|---|---|
| US3047071A | Adapter assembly | |
| US3043372A | Anchoring device | |
| US2998990A | Swab mandrel | |
| US2887347A | Swab cup | |
| US3002466A | Swab cup support | |
| US2942286A | Line cleaner | |
| US3047025A | Tubing protectors | |
| US2942665A | Drillable packer | |
| US2943009A | Process for making reinforced rubber articles | |
| US2916758A | Drill stem wiper | |
| US2963043A | Pressure responsive device | |
| US2890513A | Well spider | |
| US2862563A | Well packer assembly for packing the annular space between conduits in a well | |
| US2917004A | Method and apparatus for gas lifting fluid from plural zones of production in a well | |
| US2715552A | Drill string bushing tool | |
| US2846247A | Drilling head | |
| US2836252A | Annulus packer | |
| GB729278A | Improvements in well swabs | |
| US2743781A | Hydraulic anchor tool | |
| US2749078A | Well blowout preventer |