Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10447255 | Resistor controlled timer circuit with gain ranging | George Redfield Spalding, Jr. | 2019-10-15 |
| 9660628 | Resistor controlled timer circuit with gain ranging | George Redfield Spalding, Jr. | 2017-05-23 |