Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817049 | Data logging device with separated data memory unit having internal power source and transducer interface unit for connection to external transducers | Alexander Bates, Ronald A. Shapiro, Richard L. Tenney | 1989-03-28 |