| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 35 | |
| #2 | France | 6 | |
| #3 | Canada | 5 | |
| #4 | Germany | 4 | |
| #5 | United Kingdom | 3 | |
| #6 | Austria | 1 | |
| #7 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Materials and metallurgy | |
| #3 | Mechanical elements | |
| #4 | Machines | |
| #5 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Cylinders for combustion engines | |
| #2 | Casting metal | |
| #3 | Special machines | |
| #4 | Pistons and sealings | |
| #5 | Foundry moulding | |
| #6 | Unspecified technologies | |
| #7 | Unspecified technologies | |
| #8 | Metal production and refining | |
| #9 | Furnaces | |
| #10 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bowser Percy L | 28 |
| #2 | John Flammang | 22 |
| #3 | Venner William M | 10 |
| #4 | Bowser Jr Percy L | 10 |
| #5 | Herman Ernst | 9 |
| #6 | Flammang John | 6 |
| #7 | Ernst Herman | 3 |
| #8 | John Fiammang | 1 |
| #9 | Bowser Percy L Jr | 1 |
| #10 | Longoria Antonio | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2502767A | Apparatus for molding castings having deep fins | |
| US2309555A | Piston | |
| US2240968A | Piston | |
| US2240967A | Piston | |
| US2245456A | Cast aluminum pulley | |
| US2240966A | Piston | |
| GB523612A | Piston | |
| US2238085A | Piston | |
| US2238087A | Piston | |
| GB513014A | Method of making cast metal pistons | |
| GB505241A | Improvements in and connected with the making of pistons | |
| US2217542A | Piston | |
| US2217541A | Piston | |
| US2204173A | Melting furnace | |
| US2238086A | Piston | |
| US2236818A | Piston | |
| US2204407A | Molding machine | |
| US2129351A | Molding machine | |
| US2119004A | Lathe chuck | |
| US2117948A | Process of making castings |