| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Nails | |
| #5 | Mechanically-driven clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stevens Charles W | 7 |
| #2 | Stevens Frank E | 5 |
| #3 | Stevens Edward M | 2 |
| #4 | Noonan Thomas F | 2 |
| #5 | Geyer Carl J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3392748A | Tamper-proof valve | |
| US1958684A | Valve | |
| US2039748A | Hanger structure for meters | |
| US1860263A | Bar meter connection | |
| US1547131A | Gas-meter-connecting device | |
| US1526301A | Meter seal | |
| US1557376A | Hanger structure for meters | |
| US1298596A | Gas-meter-connecting device. | |
| CA347884A | Meter connector | |
| CA264174A | Meter hanger | |
| CA361255A | Meter connector | |
| CA355203A | Meter connector | |
| CA347883A | Meter hanger | |
| CA309288A | Bar meter connection | |
| CA255995A | Gas meter connecting device |