Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888057 | Inorganic intumescent fire protective coatings | Dwight E. Veinot, James R. Foster | 1989-12-19 |
| 4883160 | Curved escalator with fixed center constant radius path of travel | Frank Sansevero, Klaus Seehausen, James A. Rivera, Peter Borchers | 1989-11-28 |