| Patents for Alonzo T. Welch |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 306,933 | Oct. 21, 1884 | S. Lawson | Gas Engine | gas and gasoline engines |
| 307,057 | Oct. 21, 1884 | S. Lawson | Gas Engine | gas and gasoline engines |
| 399,907 | Mar. 19, 1889 | S. Lawson | Gas Engine | gas and gasoline engines |
| 399,908 | Mar. 19, 1889 | S. Lawson | Gas Engine | gas and gasoline engines |
| 402,749 | May 07, 1889 | S. Lawson | Gas Engine | gas and gasoline engines |
| 402,750 | May 07, 1889 | S. Lawson | Gas Engine | gas and gasoline engines |
| 402,751 | May 07, 1889 | S. Lawson | Gas Engine | gas and gasoline engines |
| 433,246 | Jul. 29, 1890 | S. Lawson | Valve for Gas Engines | internal combustion engine valves |
| 498,476 | May 30, 1893 | S. Lawson | Gas Engine | ignition systems |
