Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470497 | Escalator | — | 1984-09-11 |
| 4397096 | Method of and apparatus for positioning the drive units of a plural drive escalator | George A. Kappenhagen | 1983-08-09 |
| 4381851 | Track splice | — | 1983-05-03 |
| 4361220 | Drive chain | — | 1982-11-30 |
| 4249649 | Escalator having yieldable primary and non-yieldable secondary transverse guide points on one side thereof | — | 1981-02-10 |
| 4232783 | Step link for transportation apparatus | — | 1980-11-11 |
| 4231452 | Spring applied, electric released drum brake | — | 1980-11-04 |