| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 153 | |
| #2 | Canada | 10 | |
| #3 | United Kingdom | 9 | |
| #4 | Germany | 8 | |
| #5 | France | 8 | |
| #6 | Finland | 4 | |
| #7 | Austria | 3 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Chemical engineering | |
| #5 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Lubricating | |
| #2 | Unspecified technologies | |
| #3 | Vehicle parts | |
| #4 | Separation | |
| #5 | Pipes | |
| #6 | Venting or aerating devices | |
| #7 | Advertising | |
| #8 | Vehicle suspension arrangements | |
| #9 | Mechanical control devices | |
| #10 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Davis Ernest W | 28 |
| #2 | Fesler Douglas F | 22 |
| #3 | Murphy Howard J | 21 |
| #4 | Ulysses Zerk Oscar | 10 |
| #5 | Oscar Zerk | 7 |
| #6 | Pierce Earl F | 7 |
| #7 | Winkley Frank D | 6 |
| #8 | Carr Moses F | 6 |
| #9 | Zerk Oscar U | 5 |
| #10 | Gullborg Arthur V | 5 |
| Publication | Filing date | Title |
|---|---|---|
| US1690216A | Coupling | |
| GB293329A | Improvements in or relating to lubricating systems | |
| US1676424A | Lubricating apparatus | |
| US1679882A | Measuring valve | |
| US1679540A | Pneumatic tool | |
| DE473953C | Device for lubricating various lubrication points on motor vehicles by means of a lubricating pump | |
| GB264175A | Improvements in or relating to lubricating systems | |
| GB256182A | Improvements in or relating to lubricating systems | |
| GB262715A | Improvements in or relating to lubricating systems | |
| US1679538A | Lubricating apparatus | |
| US1682867A | Filter | |
| US1645902A | Lubricant-expelling cup | |
| US1675424A | Lubricant compressor | |
| US1671607A | Filter | |
| US1676457A | Lubricating apparatus | |
| US1685404A | Lubricating apparatus | |
| US1591160A | Lubricating system | |
| US1595292A | Lubricating system | |
| US1591159A | Lubricating system | |
| US1591158A | Lubricating system |