Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372687 | Instantaneous calender device with spring and tappet mounted on rotary shifter | Boris P. Krasovsky, Daniel D. Malkin | 1983-02-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372687 | Instantaneous calender device with spring and tappet mounted on rotary shifter | Boris P. Krasovsky, Daniel D. Malkin | 1983-02-08 |